How to refer to table in lyx

Question

Inside the float table box I add lyx:label but when inside the text and choose insert crossreference and choose the table label the text appears as ??

The reference to numbered equations appear normally , the problem is in table labels only.

I use elsarticle class

Answer 1

This MWE is the raw opuput of from complete source view in Lyx minus the comments. The label inside the caption is OK. Just after the caption also work, but inside the tabular environment is a wrong place.

\documentclass[english]{elsarticle}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}

\makeatletter
\providecommand{\tabularnewline}{\\}
\makeatother
\usepackage{babel}

\begin{document}

A cross reference to table \ref{tab:one}
\begin{table}
\begin{tabular}{|c|c|c|}
\hline 
 This & is & a table \tabularnewline
\hline 
\end{tabular}
\caption{\label{tab:one}The caption of table one}
\end{table}

\end{document}