diff --git a/src/cosmodb/lib/CosmoDbContext.ts b/src/cosmodb/lib/CosmoDbContext.ts
index edca0ca..89e1820 100644
--- a/src/cosmodb/lib/CosmoDbContext.ts
+++ b/src/cosmodb/lib/CosmoDbContext.ts
@@ -537,11 +537,11 @@ class CosmoDbContext {
         }
         const imgStyles: string[] = [];
         if (options[0] !== '') {
-            const value = /^d+/.test(options[0]) ? `${options[0]}px` : options[0];
+            const value = /^\d+$/.test(options[0]) ? `${options[0]}px` : options[0];
             imgStyles.push(`width:${value}`);
         }
         if (options[1] !== '') {
-            const value = /^d+/.test(options[1]) ? `${options[1]}px` : options[1];
+            const value = /^\d+$/.test(options[1]) ? `${options[1]}px` : options[1];
             imgStyles.push(`height:${value}`);
         }
         const imgStyle = imgStyles.length !== 0 ? `style="${imgStyles.join(';')}" ` : '';