line1
%%[
    SET @test = '{{{description}}}'
]%%
line2 %%= v(@test) =%% still line2
line3
%%[
    SET @key = '{{{secret}}}'
]%%

%%[
    SET @unsubMessages = 'UnsubscribeSMSMessages_DEV'
    SET @unsubEvents = 'UnsubscribeSMS_DEV'
    SET @num = concat('+', [MOBILE_NUMBER])
    SET @rs = RetrieveSalesforceObjects(
        'Contact',
        'Id,et4ae5__HasOptedOutOfMobile__c',
        'MobilePhone',
        '=',
        @num
    )
    SET @count = rowCount(@rs)
    VAR @response
    SET @rx = '^\+((?:9[679]\d8[035789]\d|6[789]\d|5[90]\d|42\d|3[578]\d|2[1-689]\d)|9[0-58]|8[1246]|6[0-6]|5[1-8]|4[013-9]|3[0-469]|2[70]|7|1)'
    SET @prefix = concat('+', RegExMatch(@num, @rx, 1))
    IF @count>0 THEN
        FOR @i = 1 TO @count DO
            SET @sk = Field(Row(@rs, @i), 'Id')
            IF Field(Row(@rs, 1), 'et4ae5__HasOptedOutOfMobile__c') == 'false' THEN
                SET @result = UpdateSingleSalesforceObject('Contact', @sk, 'et4ae5__HasOptedOutOfMobile__c', 'true')
                IF @result == 0 THEN
                    InsertData(
                        @unsubEvents,
                        'MobileNumber',
                        @num,
                        'Message',
                        [MSG(0).NOUNS],
                        'ContactId',
                        @sk,
                        'Status',
                        'Error Updating'
                    )
                ELSE
                    InsertData(
                        @unsubEvents,
                        'MobileNumber',
                        @num,
                        'Message',
                        [MSG(0).NOUNS],
                        'ContactId',
                        @sk,
                        'Status',
                        'Successfully Unsubscribed'
                    )
                ENDIF
            ELSE
                InsertData(
                    @unsubEvents,
                    'MobileNumber',
                    @num,
                    'Message',
                    [MSG(0).NOUNS],
                    'ContactId',
                    @sk,
                    'Status',
                    'Already Unsubscribed'
                )
            ENDIF
        NEXT @i
        SET @msg = Lookup(
            @unsubMessages,
            'Message',
            'Prefix',
            @prefix,
            'Type',
            'Found'
        )
        IF Length(@msg) == 0 THEN
            SET @response = 'You have unsubscribed and will no longer receive any messages.|'
        ELSE
            SET @response = @msg
        ENDIF
    ELSE
        InsertData(
            @unsubEvents,
            'MobileNumber',
            @num,
            'Message',
            [MSG(0).NOUNS],
            'Status',
            'Not Found'
        )
        SET @msg = Lookup(
            @unsubMessages,
            'Message',
            'Prefix',
            @prefix,
            'Type',
            'NotFound'
        )
        IF Length(@msg) == 0 THEN
            SET @response = 'Sorry, we could not find you'
        ELSE
            SET @response = @msg
        ENDIF
    ENDIF
]%%
%%=v(@response)=%%