Sortable Table issue

[Vikram Natarajan]

Hi,

The sortable column's data has some special characters (?, hyphens, 
commas etc) and the data is breaking the sortable feature of the table. 
I have pasted part of the stack trace from the issue we are having. Is 
there a work around? Thanks for your help in advance. We are still on 
Click 1.4

org.apache.velocity.exception.MethodInvocationException: Invocation of 
method 'toString' in  class net.sf.click.control.Table threw exception 
java.lang.NumberFormatException: For input string: "-" @ 
/users/interviews/search-results.htm[9,42]
17:30:37,406 INFO  [STDOUT]     at 
org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:286)
17:30:37,406 INFO  [STDOUT]     at 
org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:203)
17:30:37,406 INFO  [STDOUT]     at 
org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:294)
17:30:37,406 INFO  [STDOUT]     at 
org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:74)
17:30:37,406 INFO  [STDOUT]     at 
org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:448)
17:30:37,406 INFO  [STDOUT]     at 
org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:170)
17:30:37,406 INFO  [STDOUT]     at 
org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:318)
17:30:37,406 INFO  [STDOUT]     at 
org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:194)

Thanks
Vikram Natarajan