.mogrt imported to Premiere does not handle JavaScript expression properly

Hi,

I'm trying to make a .mogrt which does some changes to the text using the Expression on Source text. However, I am obviously missing something very basic. In some instances, the original text (which is in the Essential Graphics Source Text field) is gone, and even if I add something in Preimere (using the Essential Graphics parameters), this is not processed correctly.

This morning I boiled it down to the following. I made a composition in AE with one Text layer only. Added the Source Text to the text layer, and added some text. Then added the following script to the expression:

t=text.sourceText;

tres=t;

tres;

This works fine when importing to PR, and when changing the text in the Essential Graphics, this is updated correctly.

Then I copied this layer, and changed the expression to:

t=text.sourceText;

tres=t+"-def";

tres; 

When importing this to PR, the SourceText field in the Essential Graphics panel is empty, and no matter what I enter here, the text is rendered as "-def".

(I did have a much more complex script working, but made a change to this and it stopped working, and I do not understand why).

So if anybody could point me in the right direction, as to why a script which works perfectly in AE, does not work at all in PR.

Thank you

Br

John Erik