The article examines how European Union funds impacted Spain from 2007 to 2013 by using a complex economic model that looks at how money moves throughout the country. They studied how different ways of calculating the model's rules affect outcomes. Past studies may have miscalculated the effects of these funds on Spain's jobs and economy, but this new study suggests that using a different method shows more positive outcomes. Specifically, under one rule, there was no significant change, but under a different rule, jobs and the economy showed slight growth. This indicates that investing in public projects can boost the economy and job market in the short term.