DSM platforms that are based on metamodeling typically use the two-metalevel approach. Disadvantages of this approach were taken into account when developing the REAL.NET platform, and deep metamodeling approach was chosen. The following article describes an experiment to create a "smart greenhouse" programming technology on the basis of REAL.NET. The experiment has shown the efficiency of the platform for quick creation of tools for the end user programming. The article describes the platform itself and deep metamodeling approach as well as "smart greenhouse" programming technology based on it.