how do you upload indicators?

so i downloaded some indicators, how do you up load it? i try to draw the file to the "indcator" folder but it doesnt show up on the platform. thanks for the help

if mt4 is running when you copy them there you need to shut it down and restart.

i don't know whats going on, it doesn't show, when i open the metaeditor, it shows up

does it compile without errors??