If you are using variables within your link you must place the script within the onclick otherwise it will not parse the variables correctly in a list view.
* the other parameters should be left exactly as shown:
:*''opportunityid=0'' will create a new, blank {{l1}} record
* other parameters that can be used include ''defaultownerid'' which will set the [[owner]] of the new record to the [[contact]] with a matching [[userid]]. (See [[Pass Variables To Level 1]].)
This {{ROSV}} field can then be referenced in a [[list view]]: