Wiser for KNX, hours counter

[Tokatubs]

Is there any way to get this to stop after sending one mail. Now when "Greater than" it just keeps sending the email over and over again?
Tried putting some blocks in, to make it stop when it received the "true" and dont change again until next "false", but cant seem to get it to work. Or the block says it is not the same datatype. Tried setting an "and" in between greater then and the send email block.

Thanks for all the help..