How to embed Solar PV into PEM fuel cell?

I am using MATLAB PEM fuel cell model to create a PV and PEM fuel cell hybrid system. However, I am not able to add the PV model to the PEM fuel cell. The signals are not connecting.

[Ayush]

Hi Obaid-Ur-Raza Muhammad Rafique,

Could you provide more information about the problem you are facing, in the form of a screenshot or the error message you are getting?