[Qwen Image Edit 2511] Any way to control the strength of a controlnet reference image?

Qwen Image Edit understand pretty well pose, depth or canny reference image to generate a new image just by typing prompts such as "Generate an image according to reference image with following description or "Change pose of subject from image x to the pose in image y". What I was not able to do was to control how much the reference image inflience the overall generation, just like you would change the strength of a controlnet. Adding words like "loosely" or "lightly" following an image won't do anything.