Switch block in simulink does not connect

I modeled a online ups system in simulink and i am trying to connect two inverters in parallal to the load by the use of a switch to be either using the first inverter or the second inverter if something happens to the first inverter i tried connecting voltage and current sensor and switch blocks to the inverters but they do not connect, can anyone please give me a solution to this problem thanbk you.

[VIGNESH BALAJI]

what error does it show when you try the switch block?

Answer 1

[Sabin]

I suspect the blocks you are trying to connect are from two different technologies. Without a model is imposible to point to any solution.