Marton Estok

I suggest changing your openStep function to tihis. 500 is an arbitrary value, probably that delay should be a settable attribute. I made this change because otherwise the 1st step...

I'd like to use the dashboard context parameters to change the external URL's parameters. Example: ``` { $schema: https://vega.github.io/schema/vega/v3.0.json data: [ { name: source "%context%": true, url: https://example.com/datawarehousepublic?action=getReportData&country=%context.country.must.clause% } ]...