Events in dialogs

[lpopek]

I'm opening a dialog via the Javascript AJS  This is code from my velocity template. 
Link below 
https://pastebin.com/WFV1EiqB

The problem is that this code works only for the first show dialog. If I open a dialog, then close it and open up a second dialog this doesnt work 

example in created gif 

Whats problem? 
https://giphy.com/gifs/pqy83JUYp6MD3O9oBP/fullscreen
Thanks for respond