Mross and Tim_S
First of all thanks for prompt response from your side. since i am going to make one operator training simulator (OTS) for power plant, based on the labview. To implement the logic for pump, valve etc. I need very much this set reset Flip-Flop. And I have already made one set reset Flip-Flop attached here. But problem is that I can used that saved set reset Flip-Flop only once. If I will use second time this same set reset Flip-Flop by copy and paste method then both will work together, but not independently. I have made same as a SubVI but problem still same I can not use more than one place. That's why I was asking a method by which I can use self made set reset Flip-Flop any number of time independently same way as we are using other function palette elements like AND, OR, NOT gates.