Recently I came accross a weired case that one of the user can not key in equations when he wants to modify the distance mate. What he did is to select the part which he wants to change the position in an assembly, and then click Property Manager to look for the distance mate and edit it. But when he tried to increase the distance by 20mm, the value cant be changed and remained the same. For example, as shown in the picture, the initial value of the distance was 40mm, then he keyed in "+20" after the "40mm" , pressed Enter, and nothing happened.
Has anyone encounter this situation before?
Thanks and regards,