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Guys in this lecture you're going to learn how to use expressions on the source text and it's very useful

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later on.

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What are you doing bars and graphs and maybe kilometers what you like.

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It's extremely useful to learn this method.

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Let's add some text.

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I would take the text to write one two three.

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There is no meaning of writing good text here because we are going to use the expression to have the

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value for the source text.

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If you can't text now or click on it and put it on top and it down and go to the text we have the source

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text less and delete expression here that is linking the suspects to the exposition of this I will come

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to the source the next press or option on the Mac.

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Click to get the option for the expressions.

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Now I know there's an error message has appeared.

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Don't worry about it.

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It will always appeal and you have your text that source text.

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Now I use the pic to link it to the X of the circle.

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This is the X of the circle.

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I click and release click out and you have it a very big figure.

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It actually is a very light figure too.

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I don't know so many millimeters or decimals or whatever it is you need to round this figure and around

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it is very easy.

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Here I will show you how to use the javascript math and it's very easy.

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Don't be scared from the word.

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I'll come to the beginning here just at the beginning of the expression.

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Click on the small arrow and go to javascript math.

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There are so many very nice one because I love math and you have the science square root.

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Exponential and so on.

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The one that you are interested in is math that ground and you notice in brackets it will require a

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value so click and choose.

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Of course now it's a whole mess because I put the expression of math just in the beginning.

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The value here that I need is obviously the value that I pick whipped from position zero.

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So I will just delete here including the brackets the value and give it some space so you can see it

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nicely.

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Come to the end and close back the.

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But it is OK.

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Here you are now.

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Not this it has rounded.

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So math those that aren't well rounded and remove all the decimals.

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So now let's position it over.

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Here are key empty you know that the value is going with the ex-buddy.

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This is very important because it's very much used when you're doing graphs and charts you know a pie

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chart increasing which we're going to do an example and also a bar graph you want to show the values

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moving are increasing.

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You will use this strategy.

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This is cool but not that good.

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Let's make it better.

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I would like the text to go or essentially with the circle.

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The circle is going up and down.

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That's very true.

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But I wanted the text or the circle comes over here.

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The text also moves from here to here.

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So I'm going to do that i need of course to link the exposition of the text or position zero of the

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text to position zero of the circle.

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That's right.

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Let's go back here.

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Select the text and go to the transform and on the position here you can use this all of the stopwatch

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on the package will be option's stopwatch and Requip.

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Now not this I'm going to pick me up very nicely to the position I'm going to use X that is rather than

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allowing the position which has to be committed here X and Y.

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I linked it to only X and now over here in the expression it needs to return two values one for the

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X and one for the Y.

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But I only link to one value.

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So it created a variable called temp and it does put in this variable the link itself.

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OK that's position zero.

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And then sennetti.

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This is an array of two values.

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It has send the L.A. back to the position x and y.

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Of course that identical.

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Now if you move you know is going juggernaut because the two values are identical.

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I need to fix that the way to fix that is to remove the y.

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Ok I deleted it but I cannot send no value.

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I have to send a certain value the best value to is its own value and this will mean to keep the value

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inside the expression to the position.

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One of the text itself.

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Here you are.

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You got this.

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OK.

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So we have now 10 coming from position zero from the circle and the next value which is for the Y is

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coming from transform position one of the text itself.

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I click out if you play now here you are not this how it jumped a jump because this is where I positioned

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it.

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OK I can reposition it up and down but not left and right or left or right will not walk up and down

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will walk so I'll pull over here and now you have a very nice animation where the text is moving horizontally

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or on the x axis exactly was the circle itself.

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You can use this method to link one property to another property when the property requires two values

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and you just bequeath.

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I hope this gives you a lot of insight and you can start working even better with the expressions.

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Thank you for listening.

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I will see you on the next lecture.