gaps in data mess up my "correlation" indicator

Hello,

I'm currently having fun on an simple indicator that displays the pip difference between two currencies. I'm especially focusing on highly correlated pairs.

The problem I see is that there are gaps in de data (at least in the 1 minute bars), which skew my indicator, making it worthless.

This is what I do

ind_buffer1[pos]=iClose("EURUSD",0,pos)+iClose("USDCHF",0,pos);

the problem is that the data of the 2 is not in synch.

iClose("EURUSD",0,20) might be 8:00am
iClose("USDCHF",0,20) might be 8:02am

I see possible 2 solutions
1 - Fix the data problem (eliminate gaps)
2 - fix in the programming

However, for both I would need a little help.

Anyone ?

greetz
Yvan

Does this make sense to anyone of am I way off... maybe a huge newbie mistake ?

gr
Yvan