how do i have options that people can choose, say they can choose a dr name. on the pdf form, i dont want the dr name displayed, just a dr id number.

how do i have options that people can choose, say they can choose a
dr name. on the pdf form, i dont want the dr name displayed, just a dr id
number. how do i do this?

You can add a short text field to your form and use conditional logic to dynamically pass "dr id number" to that field. 

Here is the related guide.- how-to-insert-text-or-calculation-into-a-field-using-conditional-logic

Once configured, you can then map the "dr id number" field to the PDF document.

Expected results.-

I hope my answer is helpful. Let us know if you have any other questions.