How to use pointer from CheatEngine in C#

        private void fkbtn_Click(object sender, EventArgs e)
        {
            if (Process_Handle("iw5mp"))
            {

                WriteString(0x058CB138, fktxtbx.Text);
            }

            else
            {
                MessageBox.Show("Process No Found");
            }
        }

private void fkbtn_Click(object sender, EventArgs e)
        {
            if (Process_Handle("iw5mp"))
            {

                WriteString((0x08ED1542 + ReadInteger(0x058CB138)), "Hey");
            }

            else
            {
                MessageBox.Show("Process No Found");
            }
        }

#include <windows.h>

int main()
{
	DWORD pointer_add = 0x18C21;
	DWORD offset = 0xC;
	DWORD address = NULL;
	
	char meep[] = "I'm a cake";
	
	BYTE *Cake = NULL;
	Cake = Get_base("IW5"); // IW5mp.exe, base from windowclass
	
	address = (DWORD)(Cake + pointer_add + offset);
	Set_Memory("IW5", address, meep); // I'll just have the function fill in the handles by windowclass because I'm lazy..
	/*
	WriteProcessMemory(
    __in      HANDLE hProcess,
    __in      LPVOID lpBaseAddress,
    __in_bcount(nSize) LPCVOID lpBuffer,
    __in      SIZE_T nSize,
    __out_opt SIZE_T * lpNumberOfBytesWritten
    )
	*/
	
	return 0x1C3;
}