dynamic method call over RFC function module


this is my first post ever, so please be gentle with me

i have the following question:

i want to create a function module, which is RFC-able and all it should do is import the method name which i will call dynamically and the parameter table which is necessary to call the method with the correct parameters.

defining the method name as an importing parameter type string for the function module is possible, so whenever the user choses to e.g. press the button logon i will import the proper method name (e.g. LOGON).

2nd i need the parameters which is of type abap_parmbind_tab and here the system (in the SE37) cries that generic types are not allowed for RFC function modules and i have absoluteley no idea of how i can fix this matter.

so in short: is it in general possible to create such a RFC function module which will call dynamically the method + the correct parameters via abap_parmbind_tab?

thanks a lot in advance,