# How does comfyui-prompt-control schedule prompts and LoRAs over sampling steps, and what are its syntax limits and version pin?

- id: art_01M5NQ0VSSCX0BG4RT8ZENCQGE
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T05, T08 · tags: none
- updated: 2026-10-24T01:04:53.043Z
- url: https://veyrul.com/articles/art_01M5NQ0VSSCX0BG4RT8ZENCQGE

Problem. Changing prompts or LoRA strength during sampling (A1111-style prompt editing) inside ComfyUI. Conditions. asagi4/comfyui-prompt-control at commit 71f464c3 (pushed 2026-10-13), version 3.0.0-beta.10, GPL-3.0, requires Python >= 3.10. Method. Available only with the PC: Schedule Prompt and PC: Schedule LoRAs nodes (and advanced variants). Syntax [before:after:X] switches at fraction X of the timesteps (0.0-1.0); nesting is allowed; [cat:0.5] means empty then cat; range form [before:during:after:0.3,0.7]; LoRAs are scheduled by placing <lora:name:strength> inside a scheduling expression. Only fractions are supported in the basic nodes; the Advanced nodes accept step numbers if num_steps is non-zero (values with a decimal point below 1 are percentages, otherwise absolute steps), converted to percentages internally. FilterSchedule can select by tag (e.g. SECOND_PASS). Comments start with #, and # : \\ can be escaped. Failure modes. Whitespace is stripped (use NOSTRIP() to keep ...

Problem. Changing prompts or LoRA strength during sampling (A1111-style prompt editing) inside ComfyUI. Conditions. asagi4/comfyui-prompt-control at commit 71f464c3 (pushed 2026-10-13), version 3.0.0-beta.10, GPL-3.0, requires Python >= 3.10. Method. Available only with the PC: Schedule Prompt and PC: Schedule LoRAs nodes (and advanced variants). Syntax [before:after:X] switches at fraction X of the timesteps (0.0-1.0); nesting is allowed; [cat:0.5] means empty then cat; range form [before:during:after:0.3,0.7]; LoRAs are scheduled by placing <lora:name:strength> inside a scheduling expression. Only fractions are supported in the basic nodes; the Advanced nodes accept step numbers if num_steps is non-zero (values with a decimal point below 1 are percentages, otherwise absolute steps), converted to percentages internally. FilterSchedule can select by tag (e.g. SECOND_PASS). Comments start with #, and # : \\ can be escaped. Failure modes. Whitespace is stripped (use NOSTRIP() to keep it); a pre-release version (beta) may change behaviour. Limitations. Documentation page only; interactions with other conditioning nodes untested. Version and date. Commit 71f464c3.

Curator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources.

Limitations: Syntax read from docs; not executed.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://raw.githubusercontent.com/asagi4/comfyui-prompt-control/71f464c3206cce850387792fd9ae6219edae560a/doc/schedules.md",
      "note": "Scheduled prompts; intro; [project]"
    },
    {
      "url": "https://raw.githubusercontent.com/asagi4/comfyui-prompt-control/71f464c3206cce850387792fd9ae6219edae560a/pyproject.toml",
      "note": "Scheduled prompts; intro; [project]"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Problem. Changing prompts or LoRA strength during sampling (A1111-style prompt editing) inside ComfyUI. Conditions. asagi4/comfyui-prompt-control at commit 71f464c3 (pushed 2026-10-13), version 3.0.0-beta.10, GPL-3.0, requires Python >= 3.10. Method. Available only with the PC: Schedule Prompt and PC: Schedule LoRAs nodes (and advanced variants). Syntax [before:after:X] switches at fraction X of the timesteps (0.0-1.0); nesting is allowed; [cat:0.5] means empty then cat; range form [before:during:after:0.3,0.7]; LoRAs are scheduled by placing <lora:name:strength> inside a scheduling expression. Only fractions are supported in the basic nodes; the Advanced nodes accept step numbers if num_steps is non-zero (values with a decimal point below 1 are percentages, otherwise absolute steps), converted to percentages internally. FilterSchedule can select by tag (e.g. SECOND_PASS). Comments start with #, and # : \\ can be escaped. Failure modes. Whitespace is stripped (use NOSTRIP() to keep it); a pre-release version (beta) may change behaviour. Limitations. Documentation page only; interactions with other conditioning nodes untested. Version and date. Commit 71f464c3. · locator: Scheduled prompts; intro; [project] · source: https://raw.githubusercontent.com/asagi4/comfyui-prompt-control/71f464c3206cce850387792fd9ae6219edae560a/doc/schedules.md

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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