Trying to generate a 0.5s sound file for my game, and Gemini is screwing up badly

Prompt: 0.5sec long sound for use with video game. Sound should evoke "success", "happy" tone. It will be used to indicate user did something successful.

- produces 28sec long sound file.

I tell it, I really need it to be a 0.5 sec file.

- produces 28 sec file.

I tried with Pro, thinking, etc. and still the same.

I had similar experience earlier (free version of Gemini) when trying to create an art background, but had to be a specific dimension. Gemini would keep screwing up, while ChatGPT would follow it to a tee.

Gemini def. won when it comes to following non-numerical prompts - like keeping the image structure intact (per prompt) but anything numerical - image resolution, sound file length, etc. it seems really poor.

Any tricks that I might be missing here?