Click on span button not working

i have a button that is for changing captcha and just move curser on it no matter u click right left or middle mouse button it works but when i automate it by kantu it didnt work the button is created by below code
span id=“btnReloadCaptcha” class=“btn btn-warning” ng-mousedown=“regenerateCaptcha()”>az no </span
so i record it by kantu
but didnt work when reply

Did you try an XClick on this button?