Add button that saves the current document and redirects in Mobile App

Why isn't there a genuine-home grown button command in Quickbase? First question.

In my database I have the user fill out a description then I want them to "GET THERE NUMBER" (Button)

This works on a web browser but not on the app.

var text URLONE=URLRoot() & "db/" & Dbid() & "?-er&rid=" & URLEncode ([Record ID#]);

"<a class='Vibrant Snowy' style=\"width:100px; text-align: center; background-color:#81DBF8; onclick=\"javascript: DoSaveAdd();\" \" href=\"" & $URLONE & "\"></a>"

This is a simple ask, yes?
I don't understand why there isn't a direct answer to this question from Quickbase. E.g How to add a button using....

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Douglas Folk
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