diff --git a/src/Multiplier.php b/src/Multiplier.php
index 593e6a4..8888c71 100644
--- a/src/Multiplier.php
+++ b/src/Multiplier.php
@@ -324,6 +324,7 @@ public function getContainers(): iterable
 	}
 
 	/**
+	 * @param mixed[]|object $values
 	 * @internal
 	 */
 	public function setValues(array|object $values, bool $erase = false, bool $onlyDisabled = false): static
@@ -389,7 +390,9 @@ protected function isFormSubmitted(): bool
 	protected function loadHttpData(): void
 	{
 		if ($this->isFormSubmitted()) {
-			$httpData = Arrays::get($this->form->getHttpData(), $this->getHtmlName(), []);
+			/** @var array<mixed> The other types from the union can only be returned when the htmlName argument is passed. https://github.com/nette/forms/pull/333 */
+			$httpData = $this->getForm()->getHttpData();
+			$httpData = Arrays::get($httpData, $this->getHtmlName(), []);
 			$this->resolver = new ComponentResolver($httpData ?? [], $this->maxCopies, $this->minCopies);
 		}
 	}