# MX\_INFDEF
> [HTML Version](mx_infdef.htm)
**xcall MIAMEX, MX\_INFDEF, opcode, defcodes**
MX\_INFDEF (MIAMEX 143) Retrieves or sets the INFLD default TYPE codes. These may be initially set by the SBR=INFDEF statement in miame.ini, and may also be updated or queried by the SET INFDEF command.
**Parameters**
_opcode_ ([Num](num.htm.md)) \[in\]
0 (mxop\_get) to retrieve the current SBR=INFDEF: codes into _defcodes_, and 1 (mxop\_set) to make the contents of _defcodes_ be the new default INFLD codes.
_defcodes_ ([String](string.htm.md)) \[in\]
receives or supplies default INFLD TYPE codes, based on opcode.