| Name | piston_reaction | 
| Object | MaterialTag | 
| Input | ElementTag | 
| Related Tags | <MaterialTag.piston_reaction>Returns the material's piston reaction. (Only for block materials). | 
| Description | Sets the piston reaction for all blocks of this material type. Input may be: NORMAL (push and pull allowed), DESTROY (break when pushed), BLOCK (prevent a push or pull), IGNORE (don't use this), or PUSH_ONLY (push allowed but not pull) | 
| Source | https://github.com/DenizenScript/Denizen/blob/dev/plugin/src/main/java/com/denizenscript/denizen/objects/MaterialTag.java#L565 |