Trying to compare datetimes in array to a separate predetermined datetime via function/for loop/if statement

Hi all,

I am trying to write a function that removes all rows of data after associated with a certain datetime. The idea was for a loop to go through each row of my datetime column and compare that datetime to 2024-07-06. If greater (after this date) the row gets deleted via my if statement. This is the code I wrote:

 function [output] = remove_after_07(file_name)
   new  = file_name ;
   for index = 1:length(file_name.date_only)
      if index > 2024-07-06
         index = []
      end 
   end
   output                   = new ;
end

This is the error I get:

 ‘Comparison is not defined between datetime and double arrays.’

How can I make it compare the actual dates listed in the column instead of the array?

Thank you!