Alphas from dummy variables

Hello,

I have a question about my regression running in STATA. At the moment my model is Gearing ratio= a + a1*Public+ a2*DebtCrisis + b₁LNStructure-Aggregate + b₂ Structure-Aggregate*Public + b₃Structure-Aggegrate *DebtCrisis + e wherein the variables Public and DebtCrisis are dummy variables.

So my variables are Gearing, LNStructureAggregrate, Public and DebtCrisis. I use panel data between 2006 and 2011 (included the excel file which I imported to stata with my variables).

The commands I want to use are:

-mport excel " .... ", sheet("Blad1") firstrow
-xtset id year
-xtdescribe
-gen LNStructureAggregate * Public
-gen LNStructureAggregate * DebtCrisis
-regress Gearing LnStructureAggregate LNStructureAggregate*Public LNStructureAggregate*DebtCrisis, vce(robust)

Will this be a good regression for the model I use? Specifically with the Alphas from the Dummy variables.

Thanks in advance.