st: How to store the covariance values for further manupulations

[mariam ouchen <mariam.ouchen@gmail.com>]

Good day statalisters
Actually I'm faced with a problem, I'm using the command  by country:
corr var1 var2, Cov to obtain the matrix variance covariance,
but what i'need is the covariance values to compute sqrt(-2cov), how
can'i do this ?how can'i store the covariance values for my
manupulation?

Many thanks in advance!!!
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