Dynamic dropdown in webdynpro alv

Hello Experts,

I am just wondering if we can have dynamic values in webdynpro alv cells of some column.

suppose if I have three column in my alv display plant, material and mrp type.

so in the first row of alv for one material plant combination we have some mrp type values in drop down (say a, b, c).

and in second row for another material plant combination we have some other mrp type values in drop down (say e, f).

Please suggest some sample code if we can achieve this kind of functionality.

P.S. In actual scenario there would be approx. 20 columns to display as dropdown in alv.

Thanks,

Puneet