Flow formula resources
Key Takeaway
A formula resource calculates its value from an expression when the flow uses it, rather than holding a value you set.
A formula resource is a flow resource that you give a data type and a formula expression. The flow evaluates the expression at run time. You can write these expressions with Flow Formula Builder, both in formula resources and in certain flow elements.
How a formula resource differs from a variable and a constant
Each flow resource is a value you can reference throughout the flow. Here is how a formula resource differs from a variable and a constant:
- A variable stores a value that can be changed throughout the flow.
- A constant stores a fixed value.
- A formula resource works out its result from an expression when the flow uses the formula.