Power Automate (WDL) function

bool — Power Automate (WDL) function reference

Convert to boolean.

Syntax

wdl

bool(value)

wdl

bool('true')

→ true

wdl

bool(parameters('FeatureFlagEnabled'))

→ true / false

wdl

if(bool(item()?['IsActive']), 'Active', 'Inactive')

→ "Active" / "Inactive"

bool() only accepts the literal strings 'true'/'false' (case-insensitive) or an actual boolean — bool('yes') or bool(1) throws rather than coercing.
Fields already sourced from SharePoint Yes/No columns or Dataverse two-option fields typically arrive as real booleans, making a bool() wrap redundant (though harmless) on them.

From Type conversion