Get and set maximum number of seconds that the server will permit
an external command to execute.
object.ExecTime [ = seconds ]
The ExecTime property specifies the maximum number of
seconds that an external program is permitted to run on the server.
External programs are either registered using the RegisterProgram
method, or a script handler is registered using the RegisterHandler
method. If this value is zero, the default timeout period of 5
seconds will be used. The minimum execution time is 1 second and the
maximum time limit is 30 seconds.