Aggregate items [1.4]

[Voltsifer]

grpsum('CMTS','cmts_traf_in','last',0)
-is it correct formula for Aggregated item Key?
It's like ZABBIX manual examples...
But i had error:
[ERROR: Cannot add item]
Key should contain '[]0-9a-zA-Z!_,)+.*\ $'- characters only
Have any the same problems?

[hannibal20]

I changed line 325 in the include/defines.inc.php to:

define('ZBX_EREG_ITEM_KEY_FORMAT', '([]\[0-9a-zA-Z!\_\*\/\.\,\'\:\(\)\+ [.-.]\$]+)'); 

(added \' to the define) and it worked for me