Expression error: Could be out of range array subscript

Adobe After Effects Expressions

Expression error: Could be out of range array subscript

Posted by Pau Amer on June 10, 2021 at 1:47 pm
Hi, I’m trying to write a very simple script that centers Y position for a text element wich is followed with more text elements below.

The full script is the following:
```
text01= thisComp.layer("Texto01").sourceRectAtTime(time, false);
text01height = text01.height;
text01verticalpos = thisComp.layer("Texto01").transform.xPosition;
text02= thisComp.layer("Texto02").sourceRectAtTime(time, false);
text02height = text02.height;
text02verticalpos = thisComp.layer("Texto02").transform.xPosition;
text03= thisComp.layer("Texto03").sourceRectAtTime(time, false);
text03height = text03.height;
text03verticalpos = thisComp.layer("Texto01").transform.xPosition;
text04= thisComp.layer("Texto04").sourceRectAtTime(time, false);
text04height = text04.height;
text04verticalpos = thisComp.layer("Texto01").transform.xPosition;
newBoxHeight = (text01verticalpos-tituloverticalpos) + (text02verticalpos-text01verticalpos) + (text03verticalpos-text02verticalpos) + (text04verticalpos-text03verticalpos) + text04height + (titulo.height/2);
newPos = (3040/2) - (newBoxHeight/2);
```
It works until the last line. After that, AE throws an error: “Undefined value used in the expression (Could be out of range array subscript)“



What did I do wrong? I tried closing the script with “newPos;”, “[newPos]” and “[newPos, newPos]” but nothing makes it work.



Using AE 18.0 on MACos 10.14.6
Andrei Popa replied 5 years, 2 months ago 2 Members · 1 Reply
1 Reply

Andrei Popa
June 10, 2021 at 3:46 pm

I assume this expression is written in the x position after you separated dimensions?

You have tituloverticalpos and titulo.height in the newBoxHeight calculations that does not seem to be declared anywhere.

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