flipping the problem around (at least how i'm interpreting it), you're wanting to see if your input data contains a certain value, if that value doesn't exist, then you want to send an email.
Simpliest way is to pass you input data through your filtering logic. The right at the end place a nofeaturetester. if a feature comes through you filtering logic, it will come out the output port. If no feature(s) make it through the filtering logic then there will be a blank feature come out the noinput port. you can then tie this into your logic to send an email
flipping the problem around (at least how i'm interpreting it), you're wanting to see if your input data contains a certain value, if that value doesn't exist, then you want to send an email.
Simpliest way is to pass you input data through your filtering logic. The right at the end place a nofeaturetester. if a feature comes through you filtering logic, it will come out the output port. If no feature(s) make it through the filtering logic then there will be a blank feature come out the noinput port. you can then tie this into your logic to send an email
Thank you,this has helped me. It solved my issue!