IS keyword conversion

Hi :)

I have a code when I use the IS keyword, in C#, and I would be convert that code to Visual Cobol, how I can make this ?

see the code:

private static System.Boolean IsNumeric(System.Object Expression)
{
if (Expression == null || Expression is DateTime)
return false;

if (Expression is Int16 || Expression is Int32 || Expression is Int64 || Expression is Decimal || Expression is Single || Expression is Double || Expression is Boolean)
return true;

try
{
if (Expression is string)
Double.Parse(Expression as string);
else
Double.Parse(Expression.ToString());
return true;
}
catch { }
return false;
}

Thanks

Alexandre Bencz