Regex Help for Dashboard Field

[zacksoft_wf]

I am changing the dashboard XML to perform an in-line field validation, but I cannot seem to get the regEx right.
Here is the sample XML code that I already have for another field. (In this example I am validating if the field entry is numeric or not).
My regex requirement is, It should be able to check if the input entered has any space in the beginning or end or if it has any doublequotes character in it. The regex should run inside the dashboard source code XML.

=======
<eval token="validationResult">if(match(value, "([^a-zA-Z0-9]\s?[^a-zA-Z0-9])\s$"), "trailing Punctuation or Space. [Remove any padded whitespaces or double quotes frov 'Value'] ", "No padded Punctuation or Space or doublequotes [No Action Required]"</eval>
========

[johnhuang]

Assuming "value" is the original token name and "validationResult" becomes the new token, the code below will remove leading and trailing spaces, and remove double quotes.

<eval token="validationResult">trim(replace($value$, "\"", "")</eval>

[zacksoft_wf]

@johnhuang  -Thanks. 
The way I wanted to implement isn't yielding me result. It is failing.
I was thinking, is there any way I could condition match and put the same regex logic.
So I tried it but it didn't help..Could you suggest any simpler implementation , to validate this text field.

<input type="text" token="value">
<label>Value</label>
<condition match ..>
</condition>

[johnhuang · Accepted solution]

There's no need to conditional match if your goal is to sanitize the input.

<input type="text" token="value">
<label>Value</label>
<change>
<eval token="value">trim(replace(value, "\"", "")</eval>
</change>
</input>

[zacksoft_wf]

@johnhuang  - Such a simple yet brilliant solution. I got what I wanted.  Thank you so much, Sir.