These look like primary key field values to me?
I am assuming here that you are trying to send values that are from Link fields (or the key field from the current record) - although these look like they contain text, they actually store a key value. In order to get the value you want, you need to add a Lookup field to your table to get the value as text from the linked table (and sometimes a Formula if you want to create the value you need from several fields.)
Feel free to get back if you have more questions.
Julian
