Text Index (NH)

When you've got a stack of prompts - one per shot, one per variation, one per folder - the obvious move is an index: "give me the third one." Text Index (NH) does exactly that, and it's careful about the edge cases in a way that makes it genuinely safer than a naive pick.

You tell it how many slots you're using with text_count (default 5, max 64) and which one you want with index. The node exposes text_1 through text_N multiline inputs and returns the one at index as a single STRING. It's one-based, because people - and ComfyUI - think in one-based when they're counting prompts, so slot 1 is text_1, not slot 0. That's the first thing to double-check if the "wrong" prompt comes out: you're off by one from whatever system you're used to.

The interesting part is what happens at the boundaries. This isn't a node that returns None or an empty string and lets garbage flow downstream. If the index is out of range (say index 5 but text_count 3), or the selected slot is empty, the node returns an execution blocker - a special value that tells ComfyUI to skip everything downstream of it rather than run with a bogus prompt. So a workflow asking for prompt 7 of a 5-prompt stack doesn't generate a nonsense image; it just doesn't generate that branch at all. That's a design choice worth appreciating: an explicit "stop here" beats a silent empty prompt every time.

Why you'd use it

The natural consumer is a batch or animation workflow where a counter steps index and each step samples a different prompt - feed the output into a CLIP encoder, same as any prompt. It also pairs beautifully with a Switch N or a Random Choice upstream if you want to choose which index to read rather than hardcode it. The text_count cap of 64 keeps it honest for big stacks, and since the slots are multiline, each prompt can itself be a multi-line block.

Install

It's part of NH-Nodes:

• ComfyUI Manager → search NH-Nodes → install → restart ComfyUI. Or manually:

cd ComfyUI/custom_nodes
git clone https://github.com/jetthuangai/NH-Nodes.git
cd NH-Nodes
pip install -r requirements.txt

Then restart ComfyUI.

No models or heavy deps - plain string plumbing.

Common issues

The two failure modes are both "nothing comes out," and they're distinguishable: an out-of-range index or an empty slot blocks execution downstream (the graph just stops there), while a valid index with a filled slot always produces text. If a branch silently produces no image, your first check is index vs text_count. And the off-by-one: if the prompt "one before the one I picked" shows up, remember it's 1-based. Keep index visible and you'll spot either in a glance.