Marc Burgauer wrote:

I am obviously thick. ;-)

I want to do a simple calculation in a dtml tag and print the result:

<dtml-var expr="85 * HowOften">

HowOften is a value that has been set by an HTML input in a web form. When I run this with a value of 3 for the result is that it prints the character 3 85 times! So it treats it as a string.

Obviously I need to convert HowOften to a float, but how do I do it?

Two possible ways: You can "marshall" the html-input-text with: <input type="text" name="HowOften:float"> in your web-form or you can convert it in your result-page with: <dtml-var "85 * _.float(HowOften)"> -mj -- German Zope User Group (DZUG) - http://www.dzug.org/