Convert element of a vector into type T C++

I have a templated function called load for a class where I load a text file and then inside the load function, I call another function that looks like this:

void add_edge    (std::string origin, std::string destination, T value);

In order to split the text file by line, I am using a pre-defined function that returns a std::vector<std::string> where each element can be accessed by doing this:

input: hello, world, 2
std::vector<std::string> words = my_func::split(line, ',');
std::cout << words[0]; // outputs hello
std::cout << words[1]; // outputs world
std::cout << words[2]; // outputs 2

I want to pass the three words elements into add_edge like this: add_edge(words[0], words[1], words[2]); but obviously this gives me compilation errors.

So I tried to just do a type cast of type T, like this:

T value = (T) words[2]; 
add_edge(words[0],words[1],value);

This still gave me compilation errors. I've been looking around online but nothing that I've seen really matches my situation. So how can I convert words[2] into a type T and then pass that into add_edge?

Edit: Here is the compilation error I'm getting.

error: invalid cast from type '__gnu_cxx::__alloc_traits<std::allocator<std::basic_string<char> > >::value_type {aka std::basic_string<char>}' to type 'int'

The solution was to convert words[2] to an integer. Honestly I didn't realize it was that easy, I know almost nothing about templated types so I for sure thought I had to do something more tricky. Thank you for the help.