Use xlabel and you can have dynamic evars ala: %#mainhovertask%#

from the docs:
"To use $evars$ in Bangs, which contain the "CURRENT" value, use the escape code %# and prefix the "!ParseEvars" Bang!
$xTaskbarcurrentwidth$ becomes %#xTaskbarcurrentwidth%# and so on ..."

So $mainHoverTask$ becomes %#mainHoverTask%# if you want it to be dynamic.