A string which holds the different probes which are to be group scheduled. The probes can be specified in the following forms. (a) Individual ID's with comma separated as 23,45,34. (b) Range form including hyphens with multiple ranges being separated by a comma as 1-10,12-34. (c) Mix of the above two forms as 1,2,4-10,12,15,19-25.

Any whitespace in the string is considered an error. Duplicates and overlapping ranges as an example 1,2,3,2-10 are considered fine. For a single range like 1-20 the upper value (in this example 20) must be greater than lower value (1), otherwise it's treated as an error. The agent will not normalize the list e.g., it will not change 1,2,1-10 or even 1,2,3,4,5,6.. to 1-10.