Hi Stephen, I would suggest approaching this backwards, and start at the endpoint you’re needing. In other words, if you head to the standard Salesforce account page and click “new opportunity,” the URL you’re sent to should illustrate for you how your Skuid page should build the URL. For me, it looks like this:
https://na35.salesforce.com/006/e?retURL=%2F0014100000HRU3y&accid=0014100000HRU3y
and I would then set up my Skuid button to head to a URL that looks something like
https://na35.salesforce.com/006/e?retURL=%2F0014100000HRU3y&accid={{{Id}}}
That should work for standard Salesforce objects and fields. you’ll need to make sure that your button’s Model is pulling the id# field.
