I have recently built my customfield with the builder and then copy paste it into my code.
In this customfield I had a button and I set the button text to 'add', then I saw on the code that the button text was managed by the field 'std'.
The problem was that on my back office the button text wasn't displayed, so I had to rewrite the plugin's code.
So I would to know if you have a solution that doesn't involve to change the plugin's code.
Thank you and have a nice day!