Whether it is possible to coloring tasks based on "Linked issues"? For example, when I have a task which is blocked by another task, can I color this task on board? I searched here https://confluence.atlassian.com/jiracorecloud/advanced-searching-765593707.html , but I can't found a solution.
However, JIRA's built-in function for retrieving issues linkedIssues() will not help achieving what you want, as it requires to include an issue key to work.
There are addons in the Atlassian Marketplace that might help you, though:
issueFunction in hasLinks(
"is blocked by"
Statuspage customers logged more than 194 years of collective incidents in 2018. That’s a whopping 87% increase from the 104 years logged in 2017 , and we aren’t even through December yet....
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