Call function from a dynamically created Contract

Question

I'm creating a Main contract which will be used to create dynamic contracts with msg.sender as Owner. Anyone can send ETH externally to the dynamic contract and anyone can withdraw ETH from the dynamic contract but it will only goto Owner.

main.sol

contract Main{
   // this contract will just create contracts
   mapping(address => address[]) public dynamic_contracts;
   function createContract(){
      address newContract = new Dynamic(msg.sender);
      dynamic_contracts[msg.sender].push(newContract);
   }
}

dynamic.sol

Contract Dynamic{
 // this contract will hold funds and transfer em
    address Owner;
    function Dynamic (address owner) {
        Owner = owner;
    } 
    function transferFunds(){
      //transfer it to Owner
      Owner.transfer(this.balance())
    }
}

The problem is Dynamic contract is created dynamically therefore i only have its address stored in mapping dynamic_contracts of Main. I don have its abi so how do i call transferFunds function ?

Answer 1

Dynamic = Dynamic(msg.sender);

Dynamic.transferFunds();