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Is there any callback feature for layout that triggers any property change for instance?

MM20260514770

Hi,

I am trying to port some in house script from TCL to skill for virtuoso. I am unable to find any callback code for layout that could perform following task. 

For example, let's say I have an instance and a track region is fully covering it. Is there any callback that will trigger when that particular instance has any change of property for example origin change, or row/col number changed for mosaic? 

In TCL there was a callback available which will pass the modified instance object and I can filter out if the cell name matches and then my fuction could extend/shrink or shift the track region so that it still fully covers the instance. 

Thanks,

Tanvir

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