The presented work is part of the INScore project, an environment for the design of augmented interactive music scores, oriented towards unconven-tional uses of music notation and representation, including real-time symbolic notation capabilities. This environment is fully controllable using Open Sound Control [OSC] messages. INScore scripting language is an extended textual version of OSC messages that allows you to design scores in a modular and incre-mental way. This article presents a major revision of this language, based on the description and manipulation of trees.