Slim Translation error syntax

im doing translations to Haml-Slim, i have a problem in this line:

modal-alerts data= 'target-url' = new_alert_url.gsub('jusjus.jusjus', 'jusjus'),
            'ajax-form' = "false",
            'btn-ok' = 'off',
            :title = I18n.t('common.get_new_alerts')

The error is:

_alerts_bar_housing.html.slim:9: syntax error, unexpected '=', expecting keyword_end 'ajax-form' = "false", ^ 

Any idea? Thanks!

via Chebli Mohamed