The gbarline procedure is fairly new, and new options & functionality have been added in newer releases (ie, it's an evolving thing). The "subgroup" option (multiple colored segments within a bar) was added in v9.2, and therefore you will not be able to use that option in v9.1.3's proc gbarline.
If you absolutely need a similar graph in v9.1.3, you could use proc gchart to draw the bar chart with sugbroups (multiple colored segments in bars), and then use "annotate" to draw the line.