Modules & VBA :: Automatically Fill In The Fields Using Combo Box

I have a form (Project Form) with (Project_ID,Applicant_ID,Project_description, etc). To make it easier for the user who may not know the Applicant _ID when he/she is adding a new project for the applicant, I want to put a combo box with the Applicant Names in it, and once the Applicant Name is chosen, the Applicant ID will be filled out automatically and be saved in the Project Table.

My Approach so far was adding a combo box with two columns(Applicant ID, Applicant Name), and basically adding the following code:

Private Sub Combo36_AfterUpdate()
Me.Applicant_ID = Me.Combo36.Column(0)
End Sub

This approach works well, when I select an applicant, the Applicant ID will pop up correctly. However, This ID is not being saved in the Project Table.