Add to the JET_ReplaceWithSymbol.jsx SCript an variable to save Layer name

Hey, I need this JET_ReplaceWithSymbol

it does not rename the layers.

it just replaces the items with symbols,

and it does not keep layer structure intact.

but if it's doing what you need, then that's fine.

what you are wanting is to rename each symbol instance with the original objects name.

currInstance.name = currObj.name;

I also moved the redraw line outside the for loop.

this means you can undo (ctrl + Z) just once, instead of many times. if that makes sense.

/*
JET_ReplaceWithSymbol.jsx
A Javascript for Adobe Illustrator
Purpose: Replaces selected items with Instances of a Symbol from the Symbols Panel.
The desired Symbol can be defined by its index number (its number of occurrance in the Panel).
*/ 
var docRef=app.activeDocument; 
var symbolNum=prompt("Enter the number of the Symbol you want to replace each selected object",1); 
for(i=0;i<docRef.selection.length;i++){ 
          var currObj=docRef.selection; 

          var currLeft=currObj.left; 
          var currTop=currObj.top; 
          var currWidth=currObj.width; 
          var currHeight=currObj.height; 
          var currInstance=docRef.symbolItems.add(docRef.symbols[symbolNum-1]); 
          currInstance.width*=currHeight/currInstance.height; 
          currInstance.height=currHeight; 
          currInstance.left=currLeft; 
          currInstance.top=currTop; 
          currInstance.selected=true; 
          currInstance.name = currObj.name;
          currObj.remove(); 
}
redraw();