Flow conditions are a set of condition statements attached to a zone using the zone_flowcondition command that need to be met in order for the zone to advance.

Note that the requirements for conditions are stricter than for standard command conditionals:

• They can only use standard zone statuses and variables - other variable types cannot be used.
• They cannot use variable references

If a zone is placed into a “wait” state using the flow_trysingle command, the variables associated with that zone's flow conditions will be monitored - as and when they are all met - and a space appears ahead of that zone in the flow - the zone will advance without further input and will fire the command associate with the original query.