PLEASE HELP ME WITH THIS BUG IN ANOTHER FIXED OBJECTS MOD PIZZA TOWER (fixed) 

you need both coordinates A and B, if they are not selected or one is missing, the change of coordinates will not work correctly.

error context: When I put a variable to an object and I put test or play the variable that I put to the object is deleted, if you know what I'm doing wrong or what is the solution for this error please help me update: the error has already fixed

have them both target a "B" and change the "A" block to "B" block.

hold alt and click on an object to change its properties, not b. b sets the properties of the objects you place, not the ones that are already placed

Strange...