Asterisk with new functions

Question

hi all , please need help for an asterisk with windows

I created a write func odbc list records files in sql table:

[R]

dsn=connector

write=INSERT INTO ast_records (filename,caller,callee,dtime) VALUES
('${ARG1}','${ARG2}','${ARG3}','${ARG4}')

prefix=M

and set it in dialplan :

exten => _0X.,n,Set(
M_R(${MIXMONITOR_FILENAME}\,${CUSER}\,${EXTEN}\,${DTIME})= )

when I excute it I get an error : ast_func_write: M_R Function not registered:

note that : asterisk with windows