Create a method in Python to find the sum of all even numbers between two integers including the first and last number.
Low: 10
High: 20
def even_sum(low, high):
    sum = 0
    for i in range(low, high+1):
        if i % 2 == 0:
            sum += i
    return sum

result = even_sum(10, 20)
print(result)