After implementing a motivational model of action selection applied to autonomous virtual humans inspired by models of animals' decision-making, the problem consists of testing it in good conditions for validation. Indeed this model has to respect the six criteria that we define according to Tyrell's requirements for designing a mechanism of action selection. So we use the real-time framework VHD++ for advanced virtual human simulation and we define a simulated environment with many conflicting motivations. Finally a video shows the first results where the virtual human's decision-making follows the six criteria and so validates our model in the simulated environment