Customized function strings can be used to replicate changes. Incorrect variables can cause problems in customized function strings.
Only function strings for rs_insert and rs_update can use new column values.
Only function strings for rs_delete and rs_update can use old column values.
Only function strings for rs_select and rs_select_with_lock can have input templates, and use user-defined variables.
Only function strings for user-defined functions can use parameter values of functions. The parameter value of a function consists of the parameters passed to a replicated stored procedure.