Use enhacement M61X0001 for MD01

I want to use the enhancement M61X0001 for MRP controller wise planning for the transaction MD01.

i create a proyect in cmod an activate this.

I have written the example code in both the includes (ZXM61U02,ZXM61U01) of 2 EXIT_SAPLM61C_001 & EXIT_SAPMM61X_001.After activating the enhancement through the project the desired effect is not showing.

If I put breakpoint in the coding of the includes of FMs program doesn't stop at the breakpoint.

the sap help, explain that i can use this enhacement =S

Any suggestion !!!!