Figure reference problem

Question

I am using LaTeX with the help of TeXnicCenter. I try to add figure reference in my text but it did not work out. Here is what I am doing.

Code:

Figure~\ref{fig:abc} shows the execution ............

\begin{figure}[H]
\centering
  \includegraphics[height=8cm]{Path/abc.png}
  \caption{abc}
  \label{fig:abc}
\end{figure}

then it shows as

Figure ?? shows the execution of...