bug in stored procedures with SQL Editor

I just found this really stange bug in IUS V9 only with SQL Editor create procedure test( str varchar(10) ) -- nothing, just an empty procedure for our exemple end procedure; execute procedure test('hello'); => ok execute procedure test(' hello'); => ok execute procedure test('hello '); => the space at the end of the varcharcause an SQL Synthax Error !!! Even native informix stored procedures ( weblower, weburlencode ... ) using a varchar,char,lvarchar,html parameter fail. The same call with dbaccess or in an webPages works well, so the problem seems to come from SQL Editor !? Any idee ?