undefined procedure error in iRule

Hello Folks,

Could you please help me correcting my following iRule?

================================================================ when CLIENT_ACCEPTED { if { [IP::addr [IP::remote_addr] equals 172.22.64.0/24] } { snat 172.22.64.68 log local0. "SNATTed of SiteB" pool Test_pool }

elseif { [IP::addr [IP::remote_addr] equals 2.2.2.0/24] }

    {
        snatpool NAME_OF_SNAT_POOL
        pool Pool_Name
        log local0. "SNATTed of SiteA"
    }

else { pool Normal }

}

I am getting following errors while adding it to my F5.

"01070151:3: Rule [/Common/Test] error: line 11: [undefined procedure: elseif] [elseif { [IP::addr [IP::remote_addr] equals 2.2.2.0/24] }] line 15: [undefined procedure: snatpool NAME_OF_SNAT_POOL pool Pool_Name log local0. "SNATTed of SiteA" ] [{ snatpool NAME_OF_SNAT_POOL pool Pool_Name log local0. "SNATTed of SiteA" }] line 21: [undefined procedure: else] [else { pool Normal }]"

I am newbie to programming, hence I couldn't figure out the syntax error. :( Seek for your help.

Thanks, Darshan