"Not" has no support in Experimental data formatter

Wappler Version : 2.9.0 (EXPERIMENTAL ON)
Operating System : 10.15

Expected behavior

Be able to construct the following:

{{! user_badge.user_badge_id}}

Actual behavior

Before entering formatter (existing code from experimental off):

Screen Shot 2020-05-11 at 5.31.36 PM942×334 16.1 KB

turns into: