Concentration script help

I'm using this concentration script i found in the forums and it works quite well.&nbsp; <a href="https://gist.github.com/shdwjk/ad3e10e7c46597e90e31c533c9044783" rel="nofollow">https://gist.github.com/shdwjk/ad3e10e7c46597e90e31c533c9044783</a> &nbsp; Except... my players cant roll the save. Whenever they click the roll button it just takes away the marker. On a second click it put its back and says" Player is now concentrating on roll" only I can as the GM click the button and initiate the save roll. Any ideas what might be causing this? Thanks!

I was super excited to try this API also but got this error before it even loaded. Not being even remotely proficient at coding or writing code just means I disabled the API script but will follow this thread to see if you can get a solution and maybe someone can help me as well.&nbsp;

Not sure about your error. What I ended up doing was just disabling the roll button. My players prefer to do their own rolling so at least they get a message that they need to. The script seems a little buggy tough,our warlock has witch bolt and it's not adding concentration with that spell. :(