[Replication] How to define a sequence between events/functions?

Hello Everyone.
Well im updating some replicated variables on server side and then, only after that update i want to update some widgets like this:

The problem is that the function called “Update Drop Widget” is called before the variables get updated on the “inventory Add Item Server” and i want it to happen sequencially… if i put a Delay of 1 sec between them it works but it doesnt seems a good solucion… How can I force them to fire in a sequence? (already tried sequence node and it doesnt works…)