Error -2500 while writing new channel groups / channels to tdm-file

[Micha1177]

I'm creating a tdm-file using the express vis provided by LabView. Everything goes fine in opening the file and setting the file parameters.

When i'm using the write data-express vi to create a new channel group and setting it's parameters i receive an "error -2500" accompanied with the call chain of the vi.

I'm setting the parameters by using a terminal on the express vi and by using the value setting in the express vi configuration. Any ideas what might cause this error?

[Micha1177]

I solved it. I made the error to begine some of the properties names with a number, eg. 1s for 1 sigma. I renamed them to sigma_1s and it works.