Fill array row with value

Hi. How to fill array row on x0,yALL with value = 1 ? Think this is about expressions, but didn't get it a little bit.

You need to use a loop to do this -- specifically, loop through the height of the array and set each element in the desired column sequentially. Here's an example.

You need to use a loop to do this -- specifically, loop through the height of the array and set each element in the desired column sequentially. Here's an example.

Thanks!