fetch the datatype of input signal in simulink without using Mscript

Is there any way to fetch the datatype of input signal in simulink without using Mscript. I want to connect a Fcn block to a Inport. According to Inport datatype there shall be different logic. So I want to find datatype of Inport using the Fcn block. I tried "get_param(u,'SignalType')" and its a syntax error.

Please provide me some suggestion on this