Work for https://github.com/surveyjs/surveyjs/issues/896 - added expression question to the matrix dropdown
Work for https://github.com/surveyjs/surveyjs/issues/896 - added expression question to the matrix dropdown

dmitrykurmanov/surveyjs,dmitrykurmanov/surveyjs,andrewtelnov/surveyjs,dmitrykurmanov/surveyjs,andrewtelnov/surveyjs,surveyjs/surveyjs,surveyjs/surveyjs,dmitrykurmanov/surveyjs,surveyjs/surveyjs,surveyjs/surveyjs,andrewtelnov/surveyjs