Allow setting variables in TlmViewer screens

[ghost]

You should be able to set a variable in a TlmViewer screen to enable processing on named widgets. Something like:

BUTTON 'Point BSA' "unitVecX = Math.cos(parseInt(screen.get_named_widget('EL_DEG').text()) * Math.PI); api.cmd(‘PCE BSA_INERTIAL_PTG_MODE with BSA_INERTIAL_PTG_MODE_RAW_LOS_X '+ unitVecX)”

This doesn't appear to work, perhaps due to strict mode in EcmaScript 5? Possible solution is to create a tmp or variable ahead of time such that it can be used for things like this.

[ghost]

This seems like it should work. Strict mode should only keep variables from leaking out of the eval, but they should still work within.