SSMPOLLTIME system variable
Function Description:
The SSMPOLLTIME system variable is used to control the auto refresh interval of status data in sheet set.
Type : Integer 
Saved in : Registry 
Initial value : 60 
Range : 20 ~ 600
The SSMPOLLTIME system variable will set the auto refresh interval of status data in sheet set by second. To start the timer, the SSMSHEETSTATUS system variable must be 2.