Values, Molang and field help

Edit exact constants and expressions without losing source data.

Two editing modes

A numeric slider writes a constant. The expression control accepts the exact number or Molang expression for supported fields.

Slider ranges are UI convenience ranges, not general Bedrock engine limits. The expression field is the place for exact source values.

Initialization editor

Variables & MoLang offers Emitter creation, Emitter update, Particle update and Particle render targets. Selecting a target does not change source. The large source editor and matching inline field edit the same initialization expression. Inline Reset restores the imported expression; source edits and Reset support Undo and Redo. The variable table shows preview values for the selected target. Particle update and Particle render read the first live particle of the preview automatically; clicking a particle reads that one instead. With no live particle yet the table says so. Play the preview.

Inspect a field

Click the question mark beside a setting for its description, source location and current canonical value. This help view does not modify the effect.

Use Show JSON paths or Edit JSON to inspect source structure. Reset on a setting restores its imported value through the existing field reset.

Reference

Help > MoLang reference opens the official external reference. Help > Bedrock particle docs opens the official particle component reference.

The editor uses its pinned MolangJS and Wintersky preview implementations. Imported expressions can behave differently in Minecraft; inspect runtime errors and test the exported effect.