Select any particular Alphanumeric values from a column in MS Access:

From above scenario , i am just fetching BX values with numeric digits. Like 1000BX,6BX and etc..
Execute the below code and face the desire output.
SELECT F1, Mid(F1,4,Instr (F1, "BX")-2)
FROM tk
WHERE F1 Like '*[0-9]BX*';