Fix variable handling in actHandler

miguelg719 · miguelg719 · commit 1350abef07b0 · 2026-02-23T13:18:54.000-08:00
diff --git a/.changeset/modest-oyster-from-hyperborea.md b/.changeset/modest-oyster-from-hyperborea.md
@@ -0,0 +1,5 @@
+---
+"stagehand": patch
+---
+
+Fix variable replacement in actHandler
diff --git a/pyproject.toml b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "stagehand"
-version = "0.5.9"
+version = "0.5.10"
 description = "Python SDK for Stagehand"
 readme = "README.md"
 classifiers = [ "Programming Language :: Python :: 3", "License :: OSI Approved :: MIT License", "Operating System :: OS Independent",]
diff --git a/stagehand/handlers/act_handler.py b/stagehand/handlers/act_handler.py
@@ -96,7 +96,7 @@ async def act(self, options: Union[ActOptions, ObserveResult]) -> ActResult:
             if options.get("variables"):
                 variables = options.get("variables", {})
                 element_to_act_on.arguments = [
-                    str(arg).replace(f"%{key}%", str(value))
+                    str(arg).replace(f"{key}", str(value))
                     for arg in element_to_act_on.arguments or []
                     for key, value in variables.items()
                 ]

-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +---
 +"stagehand": patch
 +---
++
 +Fix variable replacement in actHandler
Original file line number	Diff line number	Diff line change
`@@ -96,7 +96,7 @@ async def act(self, options: Union[ActOptions, ObserveResult]) -> ActResult:`
`96`	`96`	`if options.get("variables"):`
`97`	`97`	`variables = options.get("variables", {})`
`98`	`98`	`element_to_act_on.arguments = [`
`99`		`- str(arg).replace(f"%{key}%", str(value))`
	`99`	`+ str(arg).replace(f"{key}", str(value))`
`100`	`100`	`for arg in element_to_act_on.arguments or []`
`101`	`101`	`for key, value in variables.items()`
`102`	`102`	`]`