Hello Munir,
I have tested this issue and it works properly for me. I am able to load multicolumn data in signal express (see attachment).I look at your picture which you have posted. In fact the delimiter is empty in your task. Even this information is very important and could be a reason for this behaviour. Please look in your text file and find out which delimiter is using between several columns. For example I use a tabulator in my text file.(see attachment)
I hope this helps.
Please feel free to contact me if you have any questions about this issue.
Best regards,
AmirG