I use some rules which instigate dime def plays being called as many probably do. Yet in the last game we didn't play dime on a set occasion yet the rule doesn't seem to have changed. Is there a random chance it won't play the rule?? Or am I just being stupid and have missed something?!

maybe your opponent didn't run the formations that called for you rule to kick in? I've had opponents run a ton of plays from one formation and it skewed the defensive calls i ran because it only called for the plays that went against one formation. Not saying that's what happened but maybe a possibility.

Thanks I've sent a pm