How can I connect a Simscape Component block to a RLC branch component.

I need to determind in the input voltage from my Simcape system and and set apropiate output based on this. I have written a simscape .ssc script for this and conneted this to the simscape component. But I cannot connect the simscape component block to the RCL branch block (Simscape / Electrical / Specialized Power Systems / Fundamental Blocks / Elements) or any other part of the simulink diagram: How can i connect the conponent block to my diagram ?