Values by reference in forwards

plugins/include/amxconst.inc

@@ -403,6 +403,7 @@ enum
 #define FP_FLOAT        1
 #define FP_STRING       2
 #define FP_ARRAY        4
+#define FP_VAL_BYREF    5   //cell & float are handled in the same way
 
 /**
  * @endsection
@@ -450,4 +451,4 @@ enum HashType
 	Hash_Keccak_512  // Provides Keccak 512 bit hashing
 };
 
-#include <cstrike_const> // To keep backward compatibility
+#include <cstrike_const> // To keep backward compatibility