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Script-Pick Whip?
Hi! I’m trying to create a pick whip in AE Scripts but can’t make it to work.
I want to achieve this expression:
thisComp.layer('RealCameraMovement').transform.position+value
but the only way I have found working is by hardcoding the expression like this in the script:
selectedLayer.property("position").expression = "thisComp.layer('" + scriptName + "').transform.position+value";
But this way, if the user later change the Null-object(the nulls name-variable is scriptName) the expression doesn’t update like if I would have made this inside AE.
Are there any way to create a pick whip in AE scripts so if the Null is later renamed the expression still works?Thanks!
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6 Replies
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Try switching the way you use ‘ and ” so that the expression ends up with double quotes defining the null’s name, like this:
selectedLayer.property(“position”).expression = ‘thisComp.layer(“‘ + scriptName + ‘”).transform.position+value’;
Dan
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Didn’t work =/ Guessing it’s nothing that is able to be done trough scripting.
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I don’t think it has anything to do with scripting. If you pickwhip this expression:
thisComp.layer(“Layer 1”).transform.position
and change it to this (replace double quotes with single quotes like your script uses):
thisComp.layer(‘Layer 1’).transform.position
the expression won’t update when you change the name of Layer 1.
Dan
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I tried as you said, chainging ‘ to ” and ” to ‘ so the script applied
selectedLayer.property("position").expression = 'thisComp.layer("' + scriptName + '").transform.position+value';
The code in AE looked like this:
thisComp.layer("nullControll").transform.position+value
and after tried to change the name of the null, the name didn’t change in the expression -
Interesting. It works fine for me. What version of AE?
Dan
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I found the problem… My script exedently created two layers with the same name and there is where the problem happened. Than’s Dan for the help!
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