# Vega encode URL with parameter in Mark Symbol href
**URL:** https://discuss.elastic.co/t/vega-encode-url-with-parameter-in-mark-symbol-href/115593
**Category:** Kibana
**Created:** [January 15, 2018, 7:09pm UTC](https://discuss.elastic.co/t/vega-encode-url-with-parameter-in-mark-symbol-href/115593 "2018-01-15T19:09:57Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@romanc](https://discuss.elastic.co/u/romanc)
#### Post date: [January 15, 2018, 7:09pm UTC](https://discuss.elastic.co/t/vega-encode-url-with-parameter-in-mark-symbol-href/115593/1 "2018-01-15T19:09:57Z")
I would like to have `href` defined on mark of type symbol in Vega plugin which will use URL to open other dashboard. So it should contain parameter from data set, e.g. `datum._source.parameter`.
How to encode such URL as a value for `href`?
I tried to do the following (URL is simplified just for the purposes of this topic):
`"href": {"value": "https://+datum._source.parameter"}`
But in that case the parameter in URL is not filled from data set.
I tried also:
`"href": {"signal": "https://+datum._source.parameter"}`
And in that case I have error: `Expression parse error: "http://+datum._source.parameter"`
What should be the correct way?
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### Author:  [@nyuriks](https://discuss.elastic.co/u/nyuriks)
#### Post date: [January 16, 2018, 12:41pm UTC](https://discuss.elastic.co/t/vega-encode-url-with-parameter-in-mark-symbol-href/115593/2 "2018-01-16T12:41:56Z")
@romanc do you mean `signal: "'https://'+datum._source.parameter"` ?
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [February 13, 2018, 12:42pm UTC](https://discuss.elastic.co/t/vega-encode-url-with-parameter-in-mark-symbol-href/115593/3 "2018-02-13T12:42:17Z")
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