Dynamic Fields: Automate Calculations with Expressions

Use Dynamic Fields to calculate field values automatically instead of entering fixed values manually.

In Easy Templates, this is done with Expressions. An expression can use the current date, template variables, other field values, or values from parent and root issues.

How to enable Expressions

In the template issue form:

1. Open the field menu using the ... button.

2. Select Use expression.

3. Enter the expression.

4. Save the template.

When enabled, the field becomes a Dynamic Field and its value is calculated automatically during issue creation.

Supported references

Expressions can use the references below.

Current date and time

Use now to work with the current date and time.

now
now()

Example:

now.plusDays(1)

Template variables

Use variables() or the shorter var() form to reference a template variable by name.

variables("Start Date")
var("Start Date")

Example:

var("Start Date").plusWeeks(1)

Current issue fields

Use fields() to reference another field from the current issue being created.

fields("Due Date")
fields(customfield_10015)

Example:

fields("Start Date").plusDays(3)

Parent issue fields

Use parent to reference values from the created parent issue.

parent.fields("Due Date")
parent.duedate

Example:

parent.fields("Due Date").plusDays(var("Buffer Days"))

Root issue fields

Use root to reference values from the top-level issue in the created structure.

root.fields("Opening date")

Example:

root.fields("Opening date").minusDays(fields("Lead time"))

Supported date functions

Expressions support the following date and time adjustments:

• plusYears() / minusYears()

• plusMonths() / minusMonths()

• plusWeeks() / minusWeeks()

• plusDays() / minusDays()

• plusWorkingDays() / minusWorkingDays()

• plusHours() / minusHours()

Example:

now.plusWorkingDays(5)

Example expressions

Set a date one week after a variable

var("Start Date").plusWeeks(1)

Set a child issue date based on the parent due date

parent.fields("Due Date").minusDays(2)

Use a root issue field and current field together

root.fields("Opening date").minusDays(fields("Lead time"))

Set a date relative to today

now.plusDays(5)

Supported field types

Dynamic Fields currently support:

• date

• date-time

• string

Related examples

now.plusDays(7)

var("Launch Date").minusWorkingDays(3)

parent.fields("Due Date").plusDays(var("Buffer Days"))

root.fields("Opening date").minusDays(fields("Lead time"))

Using Dynamic Fields with Jira Automation

You can also combine Dynamic Fields with Jira Automation by passing variable values and dates through your Automation payload and letting Easy Templates evaluate the expressions at issue creation time.

In your Automation rule, use Send web request to call the template’s webhook URL (as described in Automation & REST API), and fill in template variables directly in the JSON payload - either as fixed values or using Jira smart values like {{now}}, {{issue.duedate}}, or {{issue.customfield_XXXXX}}.

These values will be injected into the expression engine, so functions such as var("Start Date").plusWorkingDays(5) or parent.fields("Due Date").minusDays(var("Buffer Days")) can use data calculated or provided by Automation. For more complex date logic, you can rely on Jira’s built‑in date and time smart values documented at https://support.atlassian.com/cloud-automation/docs/jira-smart-values-date-and-time/

Summary

Dynamic Fields let you calculate field values automatically during issue creation.

To configure a Dynamic Field, use an Expression. Expressions are useful for dates, variables, and values based on parent, root, or current issue fields.