Apex:CommandButton Passing Value from VF to Controller

Here is the VF page:

<apex:page controller="A7_OppsCntrl" standardStylesheets="false" sidebar="false">   
    <apex:form>
        <table id= 'a7Table' class='display'>
            <thead>
                <tr>
                    <th>Deal Name</th>
                    <th>Deal Owner</th>
                    <th>Request</th>
                </tr>
            </thead>
           <apex:repeat value="{!A7Opps}" var="row">
               <tr>
                   <apex:repeat value="{!A7Opps[row]}" var="cell">
                       <td> {!cell} </td>
                   </apex:repeat>
                   <td>
                       <apex:commandButton action="{!send2Admin}" value="Request" title="Send Request to Admin" oncomplete="" reRender="block">
                           <apex:param value="{!A7Opps[row]}" assignTo="{!paramValue}"/>
                       </apex:commandButton>
                   </td>
               </tr>
           </apex:repeat>
         </table>
    </apex:form>
</apex:page>

Global With Sharing class A7_OppsCntrl {
    static string paramValue;
    public static void send2Admin(){
        user adminId = [SELECT id from user where name like 'Sir Admin' limit 1];
        string userId = toolbox.grabUserId(); //Grabs context user ID
        user userName = [SELECT name from user where id = :userId];
        task leadReq = new task();
        leadReq.OwnerId = adminId.id;
        leadReq.Subject = 'New Request';
        leadReq.Description = userName.name+' is requesting '+paramValue;
        insert(leadReq);
    }