latest.cxp Oh i see. anyway Thanks for the Reply Michael Walsh.:) Godbless. oh can i have a favor for you?? just want you to check my program in analog / in PID if it is correct? im 50-50% not sure in my program, so i want it to simulate in hmi but unfortunately as you said it cannot work... pls if you have time to checck it out. im very appreciate it.:) godbless. The process is. : i have a flowmeter then my setpoint is 75L minimum-0,max-100L. how can i sure that my control valve is closing if the flowmeter reading ("PV") is greaterthan SP. and Openning if lessthan SP.(vice versa)