ERROR !! for slice elevation

Hi guys,

I want to put values for slices elevation from a "file.dat" and i have this error message in my log panel: 

ERROR:  1: Failed to convert value for parameter Elevation to double

And...... I do not understand
Does my file "broken" ????

Regards
Thanks

Terry

Pls. check whether the values in your Elevation column are all numbers. The most likely reason for this error is that the column contains text as well.

Thank you, i will check that next week.

Regards,

Terry