Parameters have two parts, a name and a value. To get the value of a parameter you query its name: $query->param('name') will return the value. With a checkbox, the parameter will only have a value if it is checked, if it is not checked the value will be empty. The value 'on' is not really an issue, but you want your variable $TB to have the value 'TB' not 'on'.

In reply to Re^4: html checkbox and perl cgi by tangent
in thread html checkbox and perl cgi by AdrianJ217

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