Mie Loop Param Get Float 🐑

The float twin of MieLoopParamGetInt. Inside a MieNodes loop, this node pulls the current iteration's value out of the loop_ctx as a FLOAT. It's the node you use when the thing you're sweeping is a decimal - a CFG value, a denoise strength, a LoRA weight, a schedule fraction.

Part of ComfyUI-MieNodes (ComfyUI_MieNodes), MieMieeeee's utility pack, under the 🐑 Loop submenu.

Why you'd reach for it

This is where the loop system gets genuinely useful for tuning. Set up a MieLoopStart in float mode - either an explicit list like 0.4, 0.6, 0.8 or a range from a start to an end by a step - and use MieLoopParamGetFloat to feed each value straight into a sampler's cfg or denoise. One graph, one run, and you get an image at every setting instead of hand-editing the field and re-queuing five times. It turns a parameter sweep into a single loop.

How it works

Each pass, the loop's current value sits under a key in the context's state bag (default value). MieLoopParamGetFloat looks that key up and returns it as a float. Leave the key at value for the primary swept value, or set a custom key to read any float you seeded via initial_state_json or wrote back through MieLoopEnd's state_json.

The inputs and outputs that matter

• loop_ctx (MIE_LOOP_CTX) - the loop context.
• key (STRING, default value) - which entry to read. value is the current iterated float; a custom name reads something else from the state.
• default_value (FLOAT, default 0) - the fallback when the key is missing, so a first pass or an unset key won't crash the graph.
• Output FLOAT - this pass's decimal value.

Installing it

ComfyUI Manager → search ComfyUI-MieNodes → install → restart. Or:

cd ComfyUI/custom_nodes
git clone https://github.com/MieMieeeee/ComfyUI-MieNodes

then restart. No model downloads or heavy dependencies. Under 🐑 MieNodes → 🐑 Loop.

Common issues

Float rounding surprises. If you built your sequence in range mode with a step like 0.1, don't be shocked if a value reads back as 0.30000000000000004. That's ordinary floating-point, not a MieNodes bug - round it downstream if a node is picky about it.

I keep getting the default back. The key isn't matching. For the swept value, use value and make sure the loop's param_type is float. Custom keys have to match by exact spelling.

Wrong type for the loop. Looping over integers? Use MieLoopParamGetInt. Strings? MieLoopParamGetString. Grabbing a float from a loop that isn't producing floats just hands you the fallback.