how to use 32bit external procedure and 64bit external procedure with the same definition on the sam

 Hello guys,

 My question is about how to use 32bit external procedure and 64bit external procedure with the same definition on the same database at the same time.The detail is as follows:

1) we have an external procedure and compile it to a same file name with 32bit model and 64bit model respectively; For example, the name is "extproc_lib.dll"

2) we have two schemas on the database. One is user1, another is user2;

3) schema user1 want to use 32bit external procedure, but schema user2 want to use 64bit external procedure;

4) both user1 and user2 have the same definitions for the procedure on the database. For example, the same procedure name "extproc_lib()"  is for both schemas, but it can belong to different schema;