Photo Collage Toolkit - How to Automatically Scale Images to Cutouts

Ok, so I can simply transcribe the following from BatchMockup script to the scripts I want to have this option?

function editContents(newFile, theSO, rotateForBestFit, fitImage) {     

    try {     

        var lyrVis = theSO.visible;  

        app.activeDocument.activeLayer = theSO;   

        var smartObject = openSmartObject (theSO);          // open smart object; 

        smartObject.flatten();   

        smartObject.activeLayer.isBackgroundLayer=0;        // Make it a normal Layer 

        smartObject.selection.selectAll(); 

        smartObject.selection.clear();                      // Clear 

        var objWidth=smartObject.width.value; 

        var objHeight=smartObject.height.value;     

        app.load(newFile);                                  // load it into a document 

        try { 

            var objFile= app.activeDocument;                // image document 

            if (rotateForBestFit) { 

                if (objFile.width.value<objFile.height.value&&objWidth>objHeight ) { objFile.rotateCanvas(-90.0);  } // Rotate portraits 

                if (objFile.height.value<objFile.width.value&&objHeight>objWidth ) { objFile.rotateCanvas(-90.0);  } // Rotate landscapes 

                } 

            if (!fitImage) {         

                if (objFile.width.value/objFile.height.value > objWidth/objHeight) { objFile.resizeImage(null, objHeight, null, ResampleMethod.BICUBIC); } // wider 

                else {objFile.resizeImage(objWidth, null, null, ResampleMethod.BICUBIC);} // same aspect ratio or taller 

            } 

            else{ 

                if (objFile.width.value/objFile.height.value > objWidth/objHeight) {objFile.resizeImage(objWidth, null, null, ResampleMethod.BICUBIC);  }  // wider 

                else {objFile.resizeImage(null, objHeight, null, ResampleMethod.BICUBIC);} 

            } 

            objFile.resizeCanvas(objWidth, objHeight, AnchorPosition.MIDDLECENTER);  

            try{ 

                mrkLayer = objFile.artLayers.add();             // Add a Layer 

                mrkLayer.name = "TL BR Stamp";                  // Name Layer 

                mrkLayer.blendMode = BlendMode.OVERLAY;         // blend mode 

                mrkColor = new SolidColor;                       

                mrkColor.rgb.red = 128; 

                mrkColor.rgb.green = 128; 

                mrkColor.rgb.blue = 128; 

            } 

            catch(e){} 

            try{ 

                var selectedRegion = Array(Array(0,0), Array(1,0), Array(1,1), Array(0,1));  // Top Right 

                objFile.selection.select(selectedRegion);        

                objFile.selection.fill(mrkColor); 

                var selectedRegion = Array(Array(objWidth-1,objHeight-1), Array(objWidth,objHeight-1), Array(objWidth,objHeight), Array(objWidth-1,objHeight)); // Bottom Right 

                objFile.selection.select(selectedRegion);        

                objFile.selection.fill(mrkColor);    

            } 

            catch(e){} 

            objFile.selection.selectAll(); 

            try {objFile.selection.copy(true); }            //copy merge resized image into clipboard 

            catch(e){objFile.selection.copy(); }            //copy resized image into clipboard 

            objFile.close(SaveOptions.DONOTSAVECHANGES);    //close image without saving changes         

            smartObject.paste();                            //paste change smart object content from beinng empty 

        } 

        catch(e) { objFile.close(SaveOptions.DONOTSAVECHANGES); } // close image without saving changes smart oblect is empty though 

        if (smartObject.name.indexOf(".jpg")!=0) smartObject.flatten();  

        smartObject.close(SaveOptions.SAVECHANGES); //close and save 

        theSO.visible = lyrVis;  

        return app.activeDocument.activeLayer     

    }      

    catch(e) { alert(e); }     

}