You might want to ask in the CSIDE thread, I know there’s been some issues with the auto-update recently, so you might not actually have the latest. I used the web version and it worked fine.
I any case, you might try this instead:
*create_array stats 6 ""
*comment these "set" commands will have to go at the end of startup file after all the "create" commands
*set stats[1] "str"
*set stats[2] "dex"
.
.
.
Manually set all the stat names to the stats array.