I have followed all steps indicated on T6-50, but in the Cumulative Usaged report the colum "Allowable Cycles" is not shown. What should I check or what I missed.

When you say "the allowable cycles column is not shown", do you mean
1) The column is not shown at all, even the heading, or
2) The column heading is there, but no value?

Typically when the column heading is there, and the allowable cycles is zero, the input does not specify a fatigue curve. If this is your case, go back to the input, and on the first spreadsheet where you specified the allowables, press the [fatigue] button and specify a fatigue curve.

If this is not your problem, please e-mail me your ._a and ._j file so I can run your job.