[Solved] C# string compression

Ok i got it correct. Had to implement int helper = i; due to i being lost in 2nd for loop, in else statement.

Answer:

static string Compression(string test)
        {
            string result = string.Empty;

            for (int i = 0; i < test.Length; i++)
            {

                int helper = i;
                int counter = 1;
                
                for (int j = i+1; j < test.Length; j++)
                {
                    if (test[i] == test[j])
                    {
                        counter++;
                        if(j == test.Length - 1)
                        {
                            return result += test[helper] + counter.ToString();
                        }  
                    }
                    else
                    {
                        i = j-1;
                        break;
                    }      
                }

                result += test[helper] + counter.ToString();
            }

            return result;
        }