You should have no problems with that. Maybe if you'd show us what fails to work?
I've quickly created a new picklist on Contact in my dev. edition. The field got assigned Id 00N70000003FLpI
(not really important) and the values I've put in the picklist are 10%
, 20%
, ... 100%
.
Anyway - it works like a charm if I'll append &00N70000003FLpI=30%25
to the URL that shows when I click "new Contact" on the related list. 30%25
because %25
is url-encoded %
sign and in reality you should be using either server-side {!URLENCODE(...)}
or javascript's encodeURI()
function, depending how you construct your link.
One thing to note is that 30%
must be an available picklist value. Any typos = problem. Any "limited set of values because of record type or dependent picklist" = problem. And by problem I mean that your value will be ignored, you'll get "None" or whatever was the default picklist value selected.
Looks like you want to "pass-through" the picklist value to be preset after the record type selection screen. In that case you might have to encode whole "prepopulate these fields plz" expression again. Check URL Hack: Pass additional parameters into the saveURLURL Hack: Pass additional parameters into the saveURL for more ;)