Selenium IDE how to delete session Cookies?

I am doing an exercise to search a solicitor, then access her profile, then log out. I would like to clear the browser cache or the cookies, so when I run the script in a continuous pattern, it will act like start from the beginning.

It doesn't seems to work. Please give me some advise on how to modify my script so I can delete the cookies.

The error message showed in the Selenium IDE log section:

[error] Element id=edit-name not found

1. For example, for cookie _utma, the value for expires changed from 7/10/2015 9:24pm to 7/11/2015 9:24pm, I am not sure if this means the cookie being deleted successfully OR the value changes due to execution of the script.
2. what is the correct syntax for deleCookie command in Selenium Here are the syntax I used

deleteCookie > "path=/",domain=".jlaustin.tcheetah.com","recurse=true"

OR deleteCookie >"path=/,domain=.jlaustin.tcheetah.com,recurse=true"

1. I would like to know what is the difference between a domain and a host From My Firefox browser, the view cookie section show the value for the cookie agent and the cookie *_utma*

   table view of the script, screenshot1 , screenshot2

Here is the script generated by Selenium IDE (version 1.10.0)

<table cellpadding="1" cellspacing="1" border="1">
<thead>
<tr><td rowspan="1" colspan="3">search_solicitor</td></tr>
</thead><tbody>
<tr>
    <td>setSpeed</td>
    <td>5000</td>
    <td></td>
</tr>
<tr>
    <td>deleteCookie</td>
    <td>agent</td>
    <td>&quot;path=/&quot;, domain=&quot;.jlaustin.tcheetah.com,&quot; recurse=true&quot;</td>
</tr>
<tr>
    <td>deleteCookie</td>
    <td>user</td>
    <td>&quot;path=/&quot;,domain=&quot;.jlaustin.tcheetah.com&quot;,&quot;recurse=true&quot;</td>
</tr>
<tr>
    <td>deleteCookie</td>
    <td>uweopenid</td>
    <td>&quot;path=/&quot;,domain=&quot;.jlaustin.tcheetah.com&quot;,&quot;recurse=true&quot;</td>
</tr>
<tr>
    <td>deleteCookie</td>
    <td>_utma</td>
    <td>&quot;path=/&quot;,domain=&quot;.jlaustin.tcheetah.com&quot;,&quot;recurse=true&quot;</td>
</tr>
<tr>
    <td>deleteAllVisibleCookies</td>
    <td></td>
    <td></td>
</tr>
<tr>
    <td>open</td>
    <td>/?html=openid&amp;logout=1</td>
    <td></td>
</tr>
<tr>
    <td>pause</td>
    <td>6000</td>
    <td></td>
</tr>
<tr>
    <td>clickAndWait</td>
    <td>css=input[type=&quot;submit&quot;]</td>
    <td></td>
</tr>
<tr>
    <td>pause</td>
    <td>5000</td>
    <td></td>
</tr>
<tr>
    <td>type</td>
    <td>id=edit-name</td>
    <td></td>
</tr>
<tr>
    <td>type</td>
    <td>id=edit-pass</td>
    <td></td>
</tr>
<tr>
    <td>click</td>
    <td>name=autologin</td>
    <td></td>
</tr>
<tr>
    <td>clickAndWait</td>
    <td>id=edit-submit</td>
    <td></td>
</tr>
<tr>
    <td>clickAndWait</td>
    <td>id=cmp_admin</td>
    <td></td>
</tr>
<tr>
    <td>clickAndWait</td>
    <td>link=Donor</td>
    <td></td>
</tr>
<tr>
    <td>clickAndWait</td>
    <td>link=manage solicitors</td>
    <td></td>
</tr>
<tr>
    <td>clickAndWait</td>
    <td>link=Baldwin, Donna</td>
    <td></td>
</tr>
<tr>
    <td>clickAndWait</td>
    <td>css=span.systemsmallbold &gt; a</td>
    <td></td>
</tr>
<tr>
    <td>deleteAllVisibleCookies</td>
    <td></td>
    <td></td>
</tr>
</tbody></table>