Last night i was introducing my scrog net to my tent and mistakenly,Broke off a stem to one of my topped plants.I tried taping but it wouldn’t hold,I tried a twisty and again no hold,So i just decided to take it off.I hope this doesn’t harm my plant? it’s going into second week of flowering,Should i rub cinnamon on the snapped part of stem
It won’t hurt the overall plant. You just won’t get yield from the (former) stem.
A little aloe on honey on the wound can help it recover more quickly.
Hell if bot an auto throw it in water and reveg it make another plant.
Your plant will be ok.
I agree with @Mark0427
Take that broken branch and try your luck at clones. If you’re successful you’ll have a brand new plant in no time.
Waste not, want not….
You will be just fine. We cut branches all the time with zero issues. 
