• Adobe After Effects Expressions

  After Effects: Undefined value used in the expression

  Posted by Yelyzaveta Dobraya on October 1, 2021 at 1:57 pm

  <b itemprop=”name”>After Effects: Undefined value used in the expression(Could be out of range array subscript)

   

  I need your help please. Now I am studying the topic “Expressions in After Effects” and I had to create such a scale that would change its color when changing the value, but it gives me such an error. What could be the problem?

  I attach the gif, which should turn out

   

  Proplem that I have:

  

  Here’s just a paste of the code if you need it:

  x = thisComp.layer(“text”).effect(“Slider Control”)(“Slider”);

  if (x<=30){effect(“low”)(“Color”)}

  if (x>30&&x<70){effect(“middle”)(“Color”)}

  if (x>=70){effect(“high”)(“Color”)}

  

  13_Practice-1.gif 116 KB Graphics Interchange Format - Click to view

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  Dan Ebberts

  

  replied 4 years, 12 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Dan Ebberts

  October 1, 2021 at 4:49 pm

  Try it like this:

  x = thisComp.layer("text").effect("Slider Control")("Slider");
  if (x<=30){effect("low")("Color")}
  else if (x>30&&x<70){effect("middle")("Color")}
  else{effect("high")("Color")}

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