Dynamic Calling 4gl (C) within C programs

Hello world ! This time I've been working in a special project related with the solving of 4gl, C calls inside of a C application. I have read the fgl documentation about this issue. However, the main problem becomes and resumes to : Facts : I have a C application who calls a 4gl routine that I have well known its module, that is , I know the source and the target modules of the calls. Here, there's no outside question to be answered without the manual. Asks : In the 4gl source I don't know which routines have been written, since I assume in the facts that the called routine exists in that 4gl source. Here comes the problem : the way to communicate between both sources its via an string containing the name of the called routine in 4gl. I know that the make basis says that all runtime calls can be solved accord an solved symbol and at least I must know all possible symbols to be called during the running, and this could be implemented (there could be a lot of such implementations) with an array matching the string with the pointer to the symbol. Does anybody have a hint or a suggestion ? If you want to share your hints with me , please send email to cluis@.mtecv2.mty.itesm.mx and I really appreciate your help. Carlos Luis Castillo way