Hello! I am trying to test for interaction terms in my propensity model however I get the error message: 'var' invalid name.

Am I missing something?

Code:
foreach var of varlist merged_av_age merged_av_age2 merged_av_length_mar ///
merged_av_year_spouse merged_av_sex merged_av_satis_spouse ///
merged_av_satis_life merged_av_satis_health merged_av_opin_social ///
merged_av_satis_leisure merged_av_opin_foreign  merged_av_labour_inc ///
merged_av_hh_size merged_av_hh_priv merged_av_hh_pension merged_av_hh_labour ///
merged_av_vote_turn merged_av_hh_asset merged_av_health_prob {

foreach var2 of varlist merged_av_age merged_av_age2 merged_av_length_mar ///
merged_av_year_spouse merged_av_sex merged_av_satis_spouse ///
merged_av_satis_life merged_av_satis_health merged_av_opin_social ///
merged_av_satis_leisure merged_av_opin_foreign  merged_av_labour_inc ///
merged_av_hh_size merged_av_hh_priv merged_av_hh_pension merged_av_hh_labour ///
merged_av_vote_turn merged_av_hh_asset merged_av_health_prob {


capture drop temp

gen temp = ‘var’ * ‘var2’

logit dstreat merged_av_age merged_av_age2 merged_av_length_mar ///
merged_av_year_spouse merged_av_sex merged_av_satis_spouse ///
merged_av_satis_life merged_av_satis_health merged_av_opin_social ///
merged_av_satis_leisure merged_av_opin_foreign  merged_av_labour_inc ///
merged_av_hh_size merged_av_hh_priv merged_av_hh_pension merged_av_hh_labour ///
merged_av_vote_turn merged_av_hh_asset merged_av_health_prob temp

di "Testing ‘var’ * ‘var2’"

estat gof, table group(10)

}
}
Thank you!!
Sarah