Remote FM

I want to call a FM BBP_LA_GET_FULLNAME_BY_USERID which is present in SRM to R/3 …For this I have made remote connection in SM59…So my way of approach is I will create new ZFM in SRM itself in that FM I will call BBP_LA_GET_FULLNAME_BY_USERID and make it as remote enabled..Can any one tell me how to call the FM and that to write in Input and Export parameters…and how to call this in R/3…