I am trying to set Time Duration property in ControlRate processor from processor group variable. I have INTERVAL variable set to 20 and I tried to set Time Duration as ${INTERVAL} mins ${INTERVAL:toNumber() mins} I each case i have error like the following: Time duration validated against '{INTERVAL mins}' is invalid because must be of format <duration> <TimeUnit> where duration is non-negative integer and TimeUnit is supported Time Unit such as mins Is there a solution to this problem? Thank you