Gramatical Error in Sql Sentence

We updated to 7.31 Informix version. I want to use the sentece Select First 1 name From customer I can run in ISQL editor, but when I use it in a 4gl I obtain the next error when I compile: Select First 1 name From customer ^ A gramatical error has been found on line 925, character 30. The construct is not understandable in its context. See error number -4373 SQL 7.20 UD7 RDS 4GL 7.20 UD7 Thanks, in avanced. jhernandez@geuropa.com