[Billtopia]

I was thinking that this may be better for you but not 100% the pattern is right. It should find any decimal number including decimals with a decimal portion and if that is the only thing on the line (not counting white spaces) then return true

function IsNumeric( data )
    if type(data) == "number" then
        return true
    elseif type(data) ~= "string" then
        return false
    end
    data = strtrim(data)
    local x, y = string.find(data, "[%d+][%.?][%d*]")
    if x and x == 1 and y == strlen(data) then
        return true
    end
    return false
end