How to update mulitple list items at same time

Hi

I have to do a workflow usign SPD (at the moment we are not having VStudio) which has to update "Meeting Title" field in "List A" depending upon the approval process in another list (List B). if the an item is approved then there is no problem. but if the item is rejected in "List B" we have to update "Meeting Title" field to "On-Hold" in List A by checking all the items in List A. it has to update mulitple list items at once if they exist.

I have developed the workflow in SPD to do this thing but i have noticed that it is updating only the first item it found in the list. how can we make it to update multiple items.
as there is no visual studio with us now i have to do it with Sharepoint Designer. is there anyway to do this? Please 

thanks