Custom Button to fill a specific Picklist Value

Question

I am familiar with creating a custom button to 'carry' a value over from object to object, but I am unsure if it is possible to fill a Picklist Field with a specific choice.

Here's the existing link, and I need to prefill Chance__c with the pickval 10% when creating a new custom object record from the Account view related list button.

https://na2.salesforce.com/setup/ui/recordtypeselect.jsp?
ent=01I40000000IBaw&save_new_url=%2Fa01%2Fe%3FCF00N400000029JnV_lkid={!Account.Id}
&CF00N400000029JoT={!Account.Additional_Owner__c}
&CF00N400000029JoT_lkid={!Account.Additional_OwnerId__c}

Answer 1

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 saveURL for more ;)