text color based on performance

Hi,

Could someone tell me why the text color based on "&mean_rticon > 1500" prevents the experiment from compiling? There's no error message, it just won't compile. It's fine if I remove the 3 lines concerning text color red. I want all of the text to appear in red if average reaction time falls below 1500ms.

Thanks! 



if $iconresp == CORRECT

text color green

show text "CORRECT EEI!" -400 -400

delay 500

set &correct_countEEI increase #for average accuracy

set &sum_rticon increase RT # for average reaction time

set &mean_rticon expression &sum_rticon / &correct_countEEI

clear -1

fi

set &eeipercorr expression (&correct_countEEI/&numb_trials)*100  #percent correct
if &mean_rticon > 1500

text color red

fi

show text &eeipercorr -400 -450

show text "%" -375 -450

show text &mean_rticon -400 -385

show text "ms" -360 -385

show text "Trial #" -400 -355

show text &numb_trials -360 -355