Hey everyone, this is my mask brush after I’ve painted and decimated my model @.@
It has something like oppacity but it’ll be paled right away if I paint on it second time (just like when you draw something on the white board using a marker) and I can’t mask my model anymore 
I don’t know if painting or decimation has any effect to the model (I’ve tested another zsphere 125, painted it, and decimated it and after that I still can mask it, but with the model I cannot). So can anyone tellme what happened to my mask brush please 
Thanks for helping 
Maybe I did something wrong with the brush itself