Radiobutton not selecting one or other, error Morg Konotron – Csound Noobs

form caption("Morg Konotron") size(500, 240), colour(255,255,255), pluginId("def1")
keyboard bounds(6, 130, 498, 100)
groupbox bounds(110, 4, 195, 115), text("Filter"), colour(0,0,0,0), outlinecolour(40,40,40)
groupbox bounds(310, 4, 195, 115), text("LFO"), colour(0,0,0,0), outlinecolour(40,40,40)
groupbox bounds(7, 4, 106, 115), text("Modulator"), colour(0,0,0,0), outlinecolour(40,40,40)
rslider bounds(116, 26, 90, 90) channel("cutoff") range(1, 20000, 10000, 1, 0.001), text("CutOff"), channel("cutoff")
rslider bounds(206, 24, 90, 90) channel("peak") range(0, 1, 0, 1, 0.001), text("Peak"), channel("peak")
rslider bounds(306, 24, 90, 90) channel("rate") range(0, 10, 0, 1, 0.001), text("Rate"), channel("rate")
rslider bounds(406, 24, 90, 90) channel("intensity") range(0, 1, 0, 1, 0.001), text("Intensity"), channel("intensity")
checkbox bounds(12, 32, 100, 30), text("LFO Mod"), channel("enableLFO"), radiogroup(99) value(1) colour:1(17, 212, 17, 255)
checkbox bounds(12, 62, 100, 30), text("Pitch Mod"), channel("enablePitch") radiogroup(99) colour:1(20, 217, 20, 255)




-n -d -+rtmidi=NULL -M0 --midi-key-cps=4 --midi-velocity-amp=5


; Initialize the global variables. 
ksmps = 4
nchnls = 2
0dbfs = 1

;instrument will be triggered by keyboard widget
instr SimpleSynth, 1
    iFreq = p4   
    kEnv madsr .1, .2, .7, .4
    
    
    kLFO lfo chnget:k("intensity"), chnget:k("rate"), 5
    
    if chnget:k("enableLFO") == 1 then
        aVco vco2 p5*kEnv, iFreq    
        aLp moogladder aVco, chnget:k("cutoff")*kLFO, chnget:k("peak")
    else
        aVco vco2 p5*kEnv, (iFreq*kLFO)+iFreq    
        aLp moogladder aVco, chnget:k("cutoff")*kLFO, chnget:k("peak")
    endif

    outs aLp, aLp
    
endin



;causes Csound to run for about 7000 years...
f0 z