you need to check IsValid before the printString node, because that print string grabs data from your reference variable without checking it, which means it might be a null pointer, and if you never set it, than it definitely is a null pointer.
you need to check IsValid before the printString node, because that print string grabs data from your reference variable without checking it, which means it might be a null pointer, and if you never set it, than it definitely is a null pointer.