[NTG-context] Using \doifelse to change the itemization symbol in specific cases

I’m trying to create a conditional that changes the symbol used for certain item numbers. Here’s my code that doesn’t work. \define[1]\StepsCommand{\doifelse{#1}{2}{k}{#1}\ignorespaces} \defineitemgroup[Steps] \setupitemgroup[Steps][each][n,packed] \setupitemgroup[Steps][each][left=\StepsCommand] \starttext \startSteps \item A \item B % the item number should be replaced with 'k' \item C \stopSteps \stoptext The second item “B” should have the letter ‘k’ instead of the number “2.” Is this possible? Thanks, -kk