Project variables allow you to specify in one place a value which can then be referenced in many places within your Mingle project. Using a project variable instead of hard-coding a specific value means that value can be changed in one place and immediately the new value will be reflected throughout the project.

You can use project variables to store values that can be used in

There are three areas where user can use project variables in Mingle.

Card transitions

Project variables can be assigned to card properties in card transitions, e.g. Transition "Planning - Iteration" might update a card's iteration number property to equal the project variable called "Current Iteration".



MQL statements

Project variables can be referenced as constants from within MQL queries, e.g.

'Iteration Number' = (Current Iteration)

where 'Iteration Number' is numeric property and (Current Iteration) is numeric type project variable. This example applies to other data types, but please note one thing -

To use tree relationship type project variable in MQL - i.e. data type for project level variable is one of card types from tree - its name needs to be inside of single quotes.

For example,

 'Planning - Iteration' = ('Current Planning Iteration') 

where 'Planning - Iteration' is tree relationship property in 'Release - Iteration - Story' tree, and 'Current Planning Iteration' is Iteration type project variable.

Filter conditions

Project variables can be used in filter conditions, this also applies to tree filters.

You can create the following types of project variable

• Text - any text value of up to 255 characters in length.
• Numeric - any numeric value.
• Selected from team list - any project team member.
• Date - any date.
• Card - a reference to a card.

• Create project variables
• Modify or delete project variables