Highlight textbox if date <=60 days referencing an array as textbox numbers

Assuming the code runs in a userform.

Me.Controls("Ddtxt_" & j).BackColor...

To loop through the controls.

Dim j as Variant
Dim k as Variant

 j = Array(27, 29, 31, 33, 35, 37, 39, 41)

For each k in l
   'whatever
Next

Using a phone so not sure which is the problem for you, but that's how to loop through controls and 1 way to loop through an array.