Santiago Solari said head coaches need to trust in VAR after Real Madrid benefited from a controversial call in Wednesday's 2-1 Champions League win at Ajax.
Holders Madrid took control of their last-16 tie as goals from Karim Benzema and Marco Asensio, either side of a Hakim Ziyech strike, gave them a victory and two away goals at Johan Cruijff ArenA.
Ajax thought they had taken a deserved first-half lead through Nicolas Tagliafico, but the goal was ruled out after a VAR review, with Dusan Tadic judged to have impeded goalkeeper Thibaut Courtois while in an offside position.