Text works fine if the data isn't dynamic. But when you change the logical value of the row, the altered text eventually propagates to all rows even though their underlying value has not changed. It appears that the IIF() isn't being evalutated at the row level but at the column level. Only the properties with "dynamic" in their name seem to be evaluated at the "cell" or row level. That's logical but not necessarily intuitive (hence the discussions in this thread <g>.)

FWIW, most users really like the checkbox because it's easy and unambiguous, but there's a problem with legibility for the visually impaired. I use large fonts for textboxes but the checkbox comes in only one size. Color (DynamicBackColor or DynamicForeColor) is a big performance hit, mainly for 56K dailup users. Images are less of a aperformance drain but aren't much more legible than the checkbox.