Just use a few leds with setPixelColor

Hi all,

i spend 2 days to try to set some LEDs with setPixelColors.

So my code is:
Usermod …

void loop(){
for(uint16_t i = 0; i < 6; i++){
strip.setPixelColor(i,0,0,0,25); //a bit white


I used the stairway-wipe-usermod-v2.h as baseline. The mod works fine, except from my changes.
After the wipe is complete I want to use some LEDs, but that will not work.
I tried a lot but nothing really worked. But I recognized that I just need the T=1 parameter (so activate the strip).
But how can I do that?

Thanks in advance