multiple combining waveform together

i would like to multiple two waveform together (switching current and switching voltage). currently am using powerlib. it there any block that i use in order to get the waveform that i want. i have tried Product Block. is wrong.

[billy]

i tried PS Product,but it can't connect it at all..

[billy]

how can i connect the lines???? the PS product block is from simscape library.