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storing the value in a temporary variable problem

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Hello people, i want to make a pinball game fully in C#, i am using the gameion pinball template but rewrite it in C#. i run into the following problem when firing the pinball: if (CanUse == true) { ControlBallLaunchByKeyboard(); } else { // Spring resets back to normal position if (ballLaunch.localScale.y < 12) { ballLaunch.localScale.y = (ballLaunch.localScale.y + 12.0f) * 0.5f; ballLaunch.position.y = (ballLaunch.position.y - 63.00549f) * 0.5f; } } } private void ControlBallLaunchByKeyboard (){ if (Input.GetKey(KeyCode.DownArrow)) { // When the player holds down the Down Arrow button, pull down the ball launch if (ballLaunchForce < 2000) { float dt = Time.deltaTime * 8.0f; ballLaunchForce += dt * 180; ballLaunch.localScale.y = Mathf.Lerp(12.8f, 1.8f, ballLaunchForce / 2000); ballLaunch.position.y = Mathf.Lerp(-63.1f, -68.6f, ballLaunchForce / 2000); } } else { // Spring resets back to normal position if (ballLaunch.localScale.y < 12) { ballLaunch.localScale.y = (ballLaunch.localScale.y + 12.0f) * 0.5f; ballLaunch.position.y = (ballLaunch.position.y - 63.00549f) * 0.5f; } } i get allot of the following errors: - Assets/Scripts/Trig.cs(43,36): error CS1612: Cannot modify a value type return value of `UnityEngine.Transform.localScale'. Consider storing the value in a temporary variable - Assets/Scripts/Trig.cs(44,36): error CS1612: Cannot modify a value type return value of `UnityEngine.Transform.position'. Consider storing the value in a temporary variable Could anyone point out what i am doin wrong or help me ?? thanks in advance

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