if (count(Extinguisher_Locator[Number == input.Number])  >  0)

{

    temp  =  Extinguisher_Locator  [Number == input.Number];

    input.MFR_Name = temp.MFR_Name;

    input.Last_Mnt = temp.Last_Mnt;

    input.Ext_Size = temp.Ext_Size;

    input.Type = temp.Type;

    input.MFR_Year = temp.MFR_Year;

    input.Date_of_Last_Mnt = temp.Date_of_Last_Mnt;

    input.Equipment_Location = temp.Equipment_Location;

}

else

{

    alert("Extinguisher number didn't match, please continue to add a new extinguisher to this location");

}