I created a table in an email using HTML code (because it worked better than creating the table with Create HTML Table). Here is the part of the HTML:

that produces this result below the column headers:
Entry | Previous | UPDATE |
Quantity | 1 | 2 |
I need to change the background color of the Quantity UPDATE cell when the quantity changes from previous.
When I create the following formula in a compose and place its output right before output for the update column, it just puts the word yellow before the 2.
if(outputs('Get_changes_for_an_item_or_a_file_(properties_only)')?['body/ColumnHasChanged/Quantity'],'yellow',)
How should the expression look to achieve desired result and where exactly should the output be placed in the HTML?
TYIA