Script to Open Particle Expression

Save this script to shelf or bind it to a key shortcut.

string $ls[] = `ls -sl`;
string $paShapes[\] = `pickWalk -d down $ls[0\]`;
expressionEditor "" $paShapes[0\] "";

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Create Particle Stickiness

This is quite simple, in runtime expression:

if (waterShape1.collisionGeometryIndex != -1)
waterShape1.velocity -= waterShape1.collisionNormal * $sticky;