Number entries reset to 0.0 automatically.

Hi, There,

I am trying to let the users to enter a number in a text box. My text box definition looks as follows

DItem_TextRsc TEXTID_myNumber  = 
{
    NOCMD,    LCMD,    NOSYNONYM,    NOHELP,    LHELPCMD,    NOHOOK,    NOARG,
    20,
    "%0.2f",    "%0.2f",    "",    "",    NOMASK,    TEXT_NOCONCAT,
    "Road from:",
    "myNumber"
};

There are not hook function associated with it. However, when I enter a number, say 2.5, when I tab out of the text box, there display automatically change to 0.0. I am totally confuse with this behaviou.

What did I miss here?

Any suggestion will be greatly appreciated.

Ken