Problem using continuous range at the frequency setting

Hello !

I am facing a problem while using continuous range option from the frequency setting,  I don't get more then 4 samples even if I require 10 for example. I have tried to use a  for loop but it didn't work either  , how I can get the required data in function of frequency samples ?! (Note: I have check in the forum and the only thing I have found was the for loop suggestion for a similar problem but it didn't work for me). Thank you! Best regards!