decimal not compiling works in interactive sql in json

hi guys,
it is just my compiler (v7r5) that chokes with DECIMAL(x,y) but compile with DECIMAL(x) while all working in interactive????
some precompile magic to set?
I have a super simple routine below (parse a json from ifs to db2 table for staging).
works with decimal(13) not decimal(13,7)!!! any clue?

BEGSR refreshStaging;
EXEC SQL DELETE FROM CAP;
EXEC SQL INSERT INTO CAP
SELECT jt.*
FROM TABLE(IFS_READ_UTF8(
PATH_NAME => :gi_comuni_cap,
END_OF_LINE => 'NONE')) src,
JSON_TABLE(src.LINE, '$[*]' COLUMNS(

LATITUDINE DECIMAL(13,7) PATH '$.lat',
LONGITUDINE DECIMAL(13,7) PATH '$.lon'

)) AS jt
WHERE jt.COD_ISTAT <> '';
ENDSR;