I can't agree with edthearcher or xswanted. Back tension is a learned procedure and takes time to learn it - not a overnight thing or even sometimes over weeks.
In fact, one archery coach relayed that 10 weeks of dedicated practice was needed. Another bad thing about just pulling until it fires, some cams are not compatible as the "wall" is so soft that excessive draw is needed. A friend of mine had such a bow and used the "pull until it fired method." He would pull so hard, sometimes quickly, that his scores suffered. He became dejected and ended up giving up a truly nice bow. I tried the same bow/cam setup and did not have his problem. Basically, he was drawing so hard that his "sight picture" was changing - Think of where the peep is with the bow undrawn. Draw the bow and the peep lowers. Pull harder the peep lowers just a bit more. And if drawing inconsistently hard to fire a pure back tension release?
Most instructions that come with a hinge back tension release say to set them hard to go off. This starts the learning process. As you learn, you lighten the setting until one day it fires as if willed. Of course, set too light and you may "turn out your own lights." More than a few have busted themselves in the mouth, some so hard that were left bloody and well dazed, next to knocked out.
If you want to pull to get the release to fire then buy a pull/fire release. There are 2 or 3 on the market that I know of. You do have to be careful as these are set up to your draw weight, say 60 pounds, and when you apply 62 or 63 pounds they fire. Think of some shooters who just jerk back their bows when drawing - Yeah, arrow going downrange somewhere.