Creating orders for different Symbols using one Robot

Dear

I have to develop a Robot which takes Symbol name as user input and send market orders according to that input.

But CreateMarketOrders() is taking Symbol as its first parameter which is not a string rather it is an entity for cAlgo.API.Internal class. So it is giving the following error: Cannot convert string to cAlgo.Api.Internals.Symbol.

This is the prime requirement of my strategy and i need its solution urgently.

Please help, suggestions are highly appreciated.

Reagrds

Hussain