I would like to obtain the number of the variable cplex branches on at the current node during B&B.
I try this by using the callback
status = CPXXgetcallbacknodeinfo (env,cbdata,wherefrom,0,CPX_CALLBACK_INFO_NODE_VAR, &bvar) ;
bvar is supposed to hold the id of the branching variable. The statement fails as the returned value of bvar is not the correct one.
Could anyone indicate what I am doing wrong? For experimenting, I am using the code of the CPLEX example xadmipex1.c
