Create Smart contract with already deployed contract

DemoDeployedContract.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

// usage: contract is already deployed and instantiated, a reference to it is made by using its address
contract DeployedDemo{
    uint private simpleUint;
    constructor() payable{}
    function getValue() public view returns(uint){
        return simpleUint;
    }

    function setValue(uint _value) public{
        simpleUint = _value;
    }
}

contract ClientForAlreadyDeployedContract {

    address contractAddress;

    function setAddress(address _contractAddress)public{
        contractAddress = _contractAddress;
    }


    function usePreviouslyDeployedContract() public returns(uint){
        DeployedDemo deployedDemo = DeployedDemo(contractAddress);
        deployedDemo.setValue(10);
        return deployedDemo.getValue();
    }
}