Undefined Task in Vertical Direction

Hi there,
im the newbie in gantt. When i move task in the vertical direction, task in the new position showing up “Undefined”.

Pls help me, thanks

Hi @longhai,
The vertical drag is not a built-in gantt feature, and I suppose that u used some custom solution, for now I can’t say what is going wrong without an example of your code, or little demo project where I could reproduce the issue.

Hi ^^ and thanks for rep my message,
I have successfully resolved this issue.

Have a nice day ^^.