CCM - create your own complex data type id

Hello SRM Gurus,

How can I create my own complex data type (like /CCM/Price just different)? For example I'd like to define a complex multiple characteristic value, what is including some custom fields not just the standard ones?

I try to use /CCM/C_DTYPE; /CCM/D_DTYPE; /CCM/C_DTYPE_HDR; /CCM/D_DTYPE_HDR tables in se16; I also try /CCM/V_DTYPE_VL in sm30. But my added records doesn't appear in CAT schema definition drop down list (data type id).

Anybody have some experince with this issue?

Regards

Almos