I simply want to monitor the dbo.RemLactation table on the 2 columns and when there is a change then run my script, the script searches the dbo.PrmMilkVisit table and when there is a case where all are equal to 0 then fix that, it is ok if 1 of them is equal to 0 or even a couple but not all of the coordinates. So case 0 is no good, I don't want to change a data set that was 0, 100, 346 on LF to 100, 100, 346 that would be bad, but if all (LF, RF, RR and LR) are 0,0,0 0,0,0 0,0,0 0,0,0 then these need to be changed. These events are random in the table and I think the simplest fix is to monitor the RemLactation table for changes and trigger fixing these 0 problems.