Stateflow controller guard conditions

Question

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I'm attempting to build a simulink model of a hybrid electric drivetrain for a college course. I was wondering, when creating the guards for transitions between different states in a stateflow controller, what's the proper way to define a range of values for which you want the transition to happen?

For example, I want to transition from state 1 to state 2 if the variable Driver_Torque_Request falls between 0 and 0.7. I wrote the guard as such: [0<Driver_Torque_Request<=0.7], but I get unexpected behavior from the controller, eg constant looping between states 1 and 2 despite the fact that Driver_Torque_Request stays constant at zero.

I've also tried several permutations of the guard but haven't had any luck. Any ideas what might be the problem? I appreciate any guidance. Project due this Thursday!