How to convert amount data element to number data element

Dear Gurus,

I have a requirement to get the data by calling BRF+ and then pass them to BAPI 'BAPI_ASSET_ACQUISITION_POST', in the BRF+ export structure, there is a field 'AMOUNT', I bind it to DDIC element 'BF_ANBTR', the type is Number.

In BRF+, I call another global function to calculate the value, I define a local variant LV_VALUE to get export value from this function, this local variant's type is Amount, now I need to move this local variant value to the export field 'AMOUNT'.

But BRF+ doesn't allow to convert amount data element to number data element directly, and I find there is no formula function available. Only there is a function 'TO_AMOUNT' to convert number data element to amount data element.

Please help to get a solution for above solution.

Thanks.