You could use the variable tweak (like the parlor room in Haunted.)
%%VARIABLE%=%NUMBER%Text goes here%%
I tend to make either/or variables with 0=false/no and 1=true/yes. So, in my example, we'll say that giving advice on bomb shelters is linked to the BOMB variable, where 0 means you didn't or haven't and 1 means you did. On the journal page, in the appropriate location, put:
%%BOMB%=%1%1940: Gave advice on bomb shelters to public, recieved Time Travel information from mysterious colleage. <points won>%%
Obviously, if a person doesn't have BOMB=1, there will be a blank space on the page-- I don't remember if Mommy's character sheet has this or not.