Data acquisition from 7am to 9pm

Hi guys,

I'm recent to the LabView world so I've encountered some problems during my fairly new work with it.

I developed a monitoring and data acquisition program for the writing of voltage, current and power values obtained from 4 separated PVs. As you can see from the image attached, I have 2 time conditions with which the user can choose when to begin (7am) and to finish (9pm) the writing to the measurement file. 

The thing is: the writing does not begin at 7am as pretended nor does it stop as 9pm, as it continues to record data in a different file after that.

Hope you can help me

Thanks,

Francisco Nunes