st: Error code with ci2

["David LB Schwappach" <dlb@h-ero.de>]

Hello all,
STATA returns an error code when I use the ci2 command which I do not
understand:

e.g. 
ci2 xvar yvar if sample==1, level(95) corr
returns "program error:  code follows on the same line as open brace"

Thank you for enlightening me
Best regards
David

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