How to get selected values from a picklist?

I am trying to get the picklist values from a multi select picklist but for some reason it is not coming through when exporting:

VF Page section

<apex:form >
<apex:pageBlock title="Article Export" mode="edit">
<apex:pageBlockButtons location="bottom">
<apex:commandButton action="{!Export}" value="Email"/>
</apex:pageBlockButtons>

<apex:PageBlockSection title="" columns="2" collapsible="false">

           <apex:PageBlockSectionItem >
                   <span>Article Status: </span>
           <apex:selectList value="{!selectedArticleStatusOptions}" size="7" multiselect="true">
       <apex:selectOptions value="{! articleStatusOptions}" />
                   </apex:selectList>
           </apex:PageBlockSectionItem>

</apex:PageBlockSection>
</apex:pageBlock>
</apex:form>
</apex:page>

Apex:

public with sharing class ArticleExport
{
  public Set<String> selectedArticleStatusOptions = new Set<String>();
public ArticleExport()
{
this.articleStatusOptions = new SelectOption[]{‘Published’,’Draft’};
}

public SelectOption[] articleStatusOptions
{
          public get;
          private set;
}
public PageReference Export()
{
       selectedArticleStatusOptions
}
}

April 11, 2016
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Best Answer chosen by JO_Dev

JO_Dev
I figured it out. Thanks

April 11, 2016
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Jetha
Your Export method in controller doesn't look clear to me.

Can you please rewrite code for your Export method.....

April 11, 2016
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