The following script can be used as a template for the "Replace" functionality..
This following script will parse scanned data and replace any "#" with "*". This script is triggered by the on barcode event
Script( Replace )
String( sData )
Number( nScan )
Activate( On_Input, sData, nScan )
Scan_String( sData, 0 )
sData = String_Replace( sData, "#", "*", FALSE )
Scan_String( sData, 0 )
Return