Using a variable in a SELECT statement when querying LDAP - VBScript

I need to query LDAP using a variable as part of the select statement. This syntax won't work. Is is possible to do this and if so, how can I correct this so that it will work? Thanks!

dim samvariable
samvariable = johnD

"SELECT mail FROM 'LDAP://dc=fabrikam,dc=com' WHERE objectCategory='user' " & _
        "AND sAMAccountName=" & samvariable
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PonthecomputerAsked:
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Guy Hengel [angelIII / a3]Billing EngineerCommented:
dim samvariable
samvariable = "johnD"

"SELECT mail FROM 'LDAP://dc=fabrikam,dc=com' WHERE objectCategory='user' " & _
        "AND sAMAccountName='" & samvariable & "'"

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PonthecomputerAuthor Commented:
Thanks angelIII
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