Compatibility warning message regarding WPCF7_ADMIN_READ_WRITE_CAPABILITY

Hello,

After activating the plugin, i’m having this warning (allways visible) in the dashboard.

<b>Warning</b>: Use of undefined constant WPCF7_ADMIN_READ_WRITE_CAPABILITY – assumed ‘WPCF7_ADMIN_READ_WRITE_CAPABILITY’ (this will throw an Error in a future version of PHP) in <b>………..\wp-content\plugins\cf7-conditional-fields\wpcf7cf-options.php</b> on line <b>49</b>

NB: I am using the plugin in a php v 7 server.