Bind a text box from one form to a field on another having a table that is not bound to the form

am trying to bind a text on a form to a field on another form. However, the table I need to bind
it to is not the same as the on in the Form's record source. Is there an easy
way to do this?

I tried to bind it by typing the following in the Text Box controll source
but I got an error:

tableName!fieldName

Is there an easy way to do this?

Thanks,