Runtime structure creation

Hello ABAP experts,

I would like to create a structure. This structure should have the field names that I select from a table value.

For example,

Let's say my select statement returns the value 'VALUE1', my structure definition should be

begin of stru1 ,

    'VALUE1'(20) type c,

    belnr type belnr,

    matnr type matnr,

end of stru1.

Is this possible? If so, can you please provide me a sample code?

Thank you,

Ram Kannan