how to save data from random source(simulink) to excel sheet

i am using random source to give random data in simulink.i want same random number generated by random source to be saved in excel sheet.i tried using to worksspace,it gives error as horizonatalcat mismatch.then i tried with to file block,there some format mismatch.i want solution for my problem.

[Kaustubha Govind]

Where do you get the error from? The Simulink block, or when you attempting to write to an Excel file? Also, please paste the exact error if possible.