Merge branch 'feature/parameter_study_mode_fixes' into 'develop'

UNICADOworklfow: -bugFix in parametrstudy mode

See merge request !41

UNICADOworkflow/src/parameter_study/estimate_input_value_from_configuration_file.py

@@ -242,7 +242,7 @@ def estimate_input_value_from_configuration_file(root_of_study_xml_file, input_p
             if study_counter == 1:
                 new_value_of_input = round(float(current_value_of_input) * (1 + float(file_value)), 6)
             else:
-                new_value_of_input = round(reference_value_of_input * (1 + float(file_value)), 6)
+                new_value_of_input = round(float(reference_value_of_input) * (1 + float(file_value)), 6)
         else:
             # check if the first run of current input parameter should be performed
             if study_counter == 1: