VST instrument/effect type setting

Once again, created a new Intrjucer Audio Plugin project, unselect “Is a Synth”, set channel configurations to “{2,2}” only, disabled the MID INPUT/MIDI OUTPUT options. But when the plugin gets scanned in the Audio Plugin Host it is described as:

VST instrument - 2 ins / 2 outs - Company - V1.0.0 - category: "Effect"

When i set the "Is a Synth to tru the category changes, but how do i make my plugin to be reported as “VST effect” like some other plugins i have. This causes the plugin to be recognized as “VSTi” in Reaper.