Trouble with togglelayertype and categorical variables

[leibar4]

I'm having some problems using togglelayertype in the args argument.

I currently have a variable named 't landcover' in 'Set_1' within my 'M_variables' folder, and kuenm keeps producing maxent graphical outputs where this variable is continuous rather than categorical.

My code uses the togglelayertype argument as follows:
args <- "togglelayertype=t"

Am I using this wrong? Should the variable be called 'tlandcover', 't landcover', or 't_landcover'?

Anyone else having this problem?