Click Class=x-btn-text Doesn't Work

Hello All,
Could someone please let me know why issuing the click command for this doesn’t work:

Cancel

Command: click class= x-btn-text

…but yet the command for this works just fine:

Create

Command: click class= x-btn-text add

Most importantly, please advise how I could get the first case to work. Thanks

I got this figured out.