Modules & VBA :: Getting Values From A Table Via DLookup

I'm pretty familiar with getting values from a table via Dlookup. What I want to do is almost the reverse if possible? I'm declaring a variable as follows:

Dim Ref as string
Ref = [lead_id]

This is from a form.What I'd like to be able to do is go to the table [list], reference the lead ID in the table via the variable then change the field [status] to "INCALL".Can this be done in a similar way to Dlookup?

UPDATE - here is the code I am trying to use

Dim ref As String
ref = [lead_id]
Dim MySQL As String
MySQL = "UPDATE vicidial_list SET"
MySQL = MySQL & "vicidial_list.status = 'INCALL' "
MySQL = MySQL & "WHERE (((vicidial_list.status)= Ref))"
DoCmd.RunSQL MySQL

Which gives me an update clause error