Just remove the initial '*':

myArray[index].structmember = somevalue;

If you want to 'quickdelete' items in an array use a struct member for valid items and assign 0 to them, fi:

myArray[index].activeitem = 0;

If you want to be more precise and memory efficient, then you'll have to create a standard pointer list. That is, you'll have to add a next element struct member and whenever you delete an item, iterate through the list and assign the next element members.

Use the solution you like the most.